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JN T U W O R L D Code No: M0201/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 POWER SEMICONDUCTOR DRIVES (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. A single-phase fully controlled thyristor converter is supplying a dc separately ex- cited dc motor. Draw the neat waveform diagrams and explain various operating modes of the drive both in motoring and regenerative braking for (a) γ < α (b) γ > α where α: is the firing angle, γ: is the angle at which the source voltage equal to the motor back emf. Assume the armature of the separately excited dc motor can be replaced by simple R-L and back emf load. [16] 2. Explain the Speed - torque Characteristics of a dc series motor connected to a three phase semi controlled converter. [16] 3. (a) Discuss in detail with suitable circuit diagrams and waveforms, the speed control operations of a separately excited d.c.motor using a circulating current dual converter. (b) A 230 Volts, 870 rpm, 100 A separately excited d.c.motor has an armature re- sistance of 0.05 ohm. It is coupled to an over hauling load with a torque of 400 N-m. Determine the speed at which motor can hold the load by regenerative braking. [8+8] 4. (a) Distinguish between class A and class B choppers with suitable examples of speed control of motors. (b) A 220V, 190A dc series motor has armature and field resistance’s of 0.03 and 0.02 ohms respectively. Running on no load as a generator with field wining connected to a separate source it gave following magnetization characteristic at 500rpm. FieldCurrent(A) 40 80 120 160 200 TerminalVoltage (V) 52 108 148 176 189 Motor is controlled by a chopper in dynamic braking with a braking resis- tanceof 2Ω. i. Calculate motor speed for a duty ratio of 0.6 and motor current of 160A. ii. What will be the motor speed for a duty ratio of 0.75 and motor torque equal to half of rated torque? [8+8] 5. The rotor resistance and stand still reactance referred to stator of a 3 phase, 4 pole, 50 Hz Squirrel cage Induction motor is 0.2 ohm and 0.8 ohm per phase respectively. The full load slip of the motor is 4 percent. Neglect stator resistance and leakage 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0201/R05 Set No. 1 reactance. Determine how much stator voltage should be reduced in order to get a speed of 1200rpm if the load torque remains constant. [16] 6. Compare the performance of VSI & CSI fed.IM drives.Mention advantages & Dis- advantages. [16] 7. Draw the circuit diagram and explain the working of a slip power recovery system using solid - state Scherbius system for a three phase induction motor. [16] 8. In variable frequency control of asynchronous motor why (V/f) ratio is maintained constant up to base speed and V constant above base speed. Draw the relevant characteristics. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0201/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 POWER SEMICONDUCTOR DRIVES (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. Draw the equivalent circuit of a separately excited D.C motor and derive the ex- pressions for motor torque and speed. [16] 2. (a) The speed of a 50 Kw 500 V 120 A 1500rpm a separately excited dc motor is controlled by a three phase fully controlled converter and is fed from a 400V 50 Hz supply. Motor armature resistance is 0.1Ω. Find the range of firing angle required to obtain speeds between 1000rpm and (-1000)rpm at rated torque. (b) Describe how the speed of a separately excited dc motor is controlled through the use of two 3- phase full converters. [8+8] 3. A 230V 100A, 1200 rpm D.C Separately excited motor has an armature resistance of 0.04 ohms. The motor armature is fed from a variable source with an internal resistance of 0.056 ohms. (a) Calculate internal voltage of the variable voltage source when the motor is operating in regenerative breaking at 60% of the rated motor torque and 800 rpm. (b) If the motor is operated under dynamic breaking at twice the rated torque and 1000 rpm then calculate the value of breaking current and resistor by assuming linear magnetic circuit. [16] 4. Describe how a four quadrant drive can be obtained from a chopper fed separately fed dc series motor. [16] 5. Draw the following AC voltage controllers for varying the speed of a 3 phase In- duction motor (a) Star connected controller (b) Delta connected controller (c) Delta connected Stator and controller. Discuss in detail about the above types of controllers. [16] 6. Explain briefly the various methods of achieving variable frequency control of 3 Phase Induction motor using solid state switches SCRs / IGBTs. [16] 7. (a) Derive an expression for the torque T for the rotor resistance control using chopper. 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0201/R05 Set No. 2 (b) With a suitable circuit diagram explain the operation of rotor resistance con- trol using chopper. [8+8] 8. A 20 kW, 3-phase, 440V, 4 pole, delta connected permanent magnet synchronous motor has following parameters. X s = 5 ohm, R s = 0, rated power factor =1.0. Machine is controlled by variable frequency control at a constant (V/f) ratio. Cal- culate armature current, torque angle and power factor at half full load torque and 750 rpm. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0201/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 POWER SEMICONDUCTOR DRIVES (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. With neat circuit diagram explain some commonly used D.C motor drives. Also mention their applications in various fields. [16] 2. The speed of a 230 V 10 Kw 1000 rpm separately excited dc motor is controlled by a three phase fully controlled converter and is fed from a 400V 50 Hz supply .The field circuit is also supplied from the same converter .The motor parameters are R a =0.3Ω, R f =300Ω motor constant is 1.1.Armature and field currents are ripple free. (a) With field converter setting to maximum field current, calculate firing angle for the armature converter for load torque of 60 Nm at rated speed. (b) With the load torque as in part (a) and zero degree firing angle for the arma- ture converter , speed is to be raised to 3000rpm. Determine the firing angle of the field converter. [16] 3. A 220V 200A, 800 rpm D.C Separately excited motor has an armature resistance of 0.06 ohms. The motor armature is fed from a variable source with an internal resistance of 0.04 ohms. (a) Calculate internal voltage of the variable voltage source when the motor is operating in regenerative breaking at 80% of the rated motor torque and 600 rpm. (b) If the motor is operated under dynamic breaking at twice the rated torque and 800 rpm then calculate the value of breaking current and resistor by assuming linear magnetic circuit. [16] 4. Explain the operation of four quadrant chopper fed to the D.C separately excited motor and also draw the current and voltage wave forms for continuous current operation. [16] 5. A 3 phase Squirrel cage Induction motor having 6 poles operating at 50 Hz has rotor resistance and stand still reactance referred to stator are 0.2 ohm and 1 ohm per phase when it is operated at rated voltage and rated frequency has a slip of 4 percent at full load . At what speed the motor will operate when the stator impressed voltage is reduced to 1/1.414 times the rated voltage. Assume that the load torque remains constant at the rated motor torque. [16] 6. Explain 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0201/R05 Set No. 3 (a) Why the variable frequency control is of Induction motor is more efficient than stator voltage control. (b) Why the variable frequency control yields high torque to current ratio during starting. [8+8] 7. How the speed and power factor of a wound rotor Induction motor are controlled by injecting a voltage in the rotor circuit? What should be the relation between the frequency of the injected voltage and the frequency of the rotor induced voltage? [16] 8. With suitable circuit diagrams explain the principle of operation of Current source Inverter fed Synchronous motor drive. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0201/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 POWER SEMICONDUCTOR DRIVES (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. A dc series motor has R a = 3Ω , R f = 3 Ω and M af = 0.15 H. The motor speed is varied by a phase-controlled bridge. The firing angle is π 4 and the average speed of the motor is 1450 rpm. The applied ac voltage to the bridge is 330 Sin wt. Assuming continuous motor current find the steady state average motor current and torque. Sketch the waveforms for output voltage, current and gating signals. [16] 2. Describe how the speed of a separately excited dc motor is controlled through the use of two 3- phase full converters. Discuss how two quadrant drive can be obtained from the scheme. Derive expressions for rms values of source and thyristor currents. State assumptions made. [16] 3. A 220V, 500A, 600 rpm separately excited motor has R a =0.02 ohms and R f =10 ohms, Load torque T L =2000-2N N-m, Where N is Speed in rpm, Speeds below the rated are obtained by armature voltage control and speeds above the rated are obtained by field control. (a) Calculate motor terminal voltage and armature current when the speed is 450 rpm. (b) Calculate field winding voltage and armature current when the speed is 750 rpm. [16] 4. A class-A chopper, operating in time-ratio control, is supplying the armature of the separately excited dc motor. Show that the motor speed-torque relationship is , ω m = δ.V K − R a K 2 T a Where V - chopper input voltage, Ra - Armature resistance, Ta - motor torque, K- torque constant. [16] 5. (a) Generally the stator voltage control is suitable for speed control of Induction motor in fan and pump drives. Discuss in detail why the above method is useful. (b) Explain why the stator voltage control is not an efficient method of control. [8+8] 6. Discuss in detail the principle of operation of a 3 Phase Induction motor when it is operated below rated frequency and above rated frequency. Draw relevant speed torque characteristics. [16] 7. Draw a suitable circuit diagram and explain the working of slip - power recovery scheme using commutatorless Krammer drive. [16] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0201/R05 Set No. 4 8. In variable frequency control of asynchronous motor why (V/f) ratio is maintained constant up to base speed and V constant above base speed. Draw the relevant characteristics. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0501/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 WEB TECHNOLOGIES (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Create a simple HTML page which demonstrates the use of the various types of lists. Try adding a definition list which uses an unordered list to define terms. (b) Write a program to construct a binary tree and to traverse the same in post- order. [8+8] 2. (a) Describe the basic process of event-driven computation in creating javascript. (b) Explain how does parameter passing work in javascript? (c) Write a javascript that reads six integers and displays the largest and smallest integers from the given integers. [5+5+6] 3. (a) Write an XML schema that provides tabulated information related to expected height(in cms) and weight(in kgs) for both male and female separately for the age groups starting with 5-10 years, 10-15 years, 15-20 years, and so on. (b) Give the merits and demerits of DTDs in XML. [8+8] 4. (a) Explain the following given classes and their usage: i. ParameterDescriptor ii. PropertyChangeEvent iii. PropertyEditorManager iv. PropertyEditorSupport. (b) Write about EJB. [8+8] 5. (a) Develop a servlet that illustrates usage of cookies. (b) Write about Security Issues. [10+6] 6. List and explain the attributes of the page directive. [16] 7. (a) Explain how a server generates dynamic content. (b) Give a note on request time errors. [8+8] 8. Develop a JSP to act as a simple search engine with the support of necessary database. Web page will accept the topic name and JSP will be activated by a “submit” button click. JSP will open relevant page with a set of relevant URLs for that topic. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0501/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 WEB TECHNOLOGIES (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Write HTML code to create a frame with a table of contents on the left side of the window, and have each entry in the table of contents use internal linking to scroll down the document frame to the appropriate subsection. (b) What is Cascading Style Sheet (CSS)? Write a CSS that contains a rule that displays h1. elements in blue. In addition, create a rule that displays all links in blue without underlining them. When a mouse hovers over a link, change the link’s background color to yellow. [8+8] 2. (a) Compare and contrast HTML and DHTML. (b) Write a javascript to validate a form consisting of a username. Also navigate to another web page after validation. [8+8] 3. Design an XML schema for hospital information management. Include every feature available with schema. [16] 4. (a) Explain the following given interfaces and their usage: i. PropertyChangeListener ii. PropertyEditor iii. VetoableChangeListener iv. Visibility. (b) Explain the major categories of beans contained in an EJB container. [8+8] 5. (a) Develop a servlet that illustrates usage of cookies. (b) Write about Security Issues. [10+6] 6. (a) Differentiate between servlets and JSPs. (b) Write a JSP expression to insert current date and time in to a web page.[8+8] 7. Develop a JSP with a bean to rotate advertisements, where advertisements are images. [16] 8. Write a program that lists all books and the authors for those books from technical- library database. [Assume database schema]. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0501/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 WEB TECHNOLOGIES (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. Create a HTML document that has five frames.There must be two rows of frames, the first with three frames and the other with two frames. The frames in the first row must have equal width. The left frame in the second row must be 50 percent of the width of the display. Each of the frames in the top row must display a document that has a form. The left top frame must have two test boxes, each 30 characters wide, labeled Name and Address. The middle top frame must have five radio buttons with color name labels. The right top frame must have four checkboxes, labeled with four kinds of car equipment such as a CD player and air conditioning. The two bottom frames must have images of two different cars. The top row of frames must use 20 percent of the height of the display. [16] 2. (a) Create a javascript which has event handlers for the buttons “red”, “blue”, “green”, “yellow” and “orange” which must produce messages stating the chosen favorite color.The event handler must be implemented as a function, whose name must be assigned to the onclick attribute of the radio button elements. The chosen color must be sent to the event handler as a parameter. (b) Insert an image into a web page. Write a script which displays a message when the mouse is over the image. The co-ordinates of the mouse should be displayed if click is attempted on the image. [8+8] 3. (a) What is a namespace? Describe how a namespace is created with a relevant example. (b) Define an XML schema. Show how an XML schema can be created. [8+8] 4. (a) Discuss the process of Introspection for a bean. (b) Demonstrate creation of a simple bean which needs to be connected to other components via the BDK. [8+8] 5. (a) Explain the servlet architecture. (b) Define a session? Explain the session tracking mechanism? [8+8] 6. (a) What are the limitations of Servlets? How JSP over comes these Problems. (b) Discuss about Tomcat Server. [8+8] 7. Develop a JSP to display one of three pages based on the user choice. Collect the choice from the user in a form of a web page. [16] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0501/R05 Set No. 3 8. Develop a JSP to act as a simple search engine with the support of necessary database. Web page will accept the topic name and JSP will be activated by a “submit” button click. JSP will open relevant page with a set of relevant URLs for that topic. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0501/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 WEB TECHNOLOGIES (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Create a simple HTML page which demonstrates the use of the various types of lists. Try adding a definition list which uses an unordered list to define terms. (b) Write a program to construct a binary tree and to traverse the same in post- order. [8+8] 2. (a) Write a javascript which reads a number given and displays the output in words. (Eg: Given 123, output should be ONE TWO THREE) (b) With suitable examples show how the looping statements are used in javascripts. [8+8] 3. Design an XML schema for hospital information management. Include every feature available with schema. [16] 4. (a) What is a Java bean? “Java bean is a reusable platform-neutral software component”-justify this statement. (b) Explain the highlighting features of java bean. [8+8] 5. (a) What is a cookie? Explain the java class which encapsulates cookies. (b) Discuss about session tracking. [8+8] 6. (a) Explain the lifecycle of JSP. (b) Discuss the JSP standard actions. [8+8] 7. (a) Make a comparison of scriplets and beans. (b) How data will be shared between JSPs. [8+8] 8. Write a program that lists all books and the authors for those books from technical- library database. [Assume database schema]. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech I Semester Supplementary Examinations, November, 2011 EMBEDDED SYSTEMS (Common to Computer Science & Engineering, Information Technology and Electronics & Control Engineering) Time: 3 hours Max. Marks: 80 Answer any FIVE Questions All Questions carry equal marks ***** 1. a) Define the terms ‘System’ and an ‘Embedded system’. Give the classification of embedded systems. [8] b) List the various complex systems available and explain their performance characteristics. [8] 2. a) Explain about TCON and TMOD function registers relevant to counters and timers of the 8051 microcontroller. [8] b) Tabulate the special function registers by making four columns as register, bit, primary function and bit addressable. [8] 3. a) List out and briefly explain the Boolean bit-level operations. [8] b) Write an assembly language program to OR the contents of port 1 and 2 and put the result in external RAM location 0100h.Write comment on this. [8] 4. a) Explain with suitable example, how to perform increment and decrement the contents of registers and RAM using relevant mnemonics. [8] b) Write an assembly language program to get hex data in the range of 00-FFh from the port 0 and convert it to decimal. Save the digits in R7, R6 and R5, where the LSB is in R7. Place comments on each line of code. [8] 5. With the aid of neat diagram the design approach of interfacing with keyboard with Display unit to 8051 microcontroller based embedded system. Write down the necessary program. [16] 6. What are the states of a task? Explain which is the entity controlling (Scheduling) the transitions from one state to another in a task? [16] R05 Code No. N0501 Set No.1 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 7. With suitable embedded system example, explain how laboratory tools are utilized for design using RTOS. [16] 8. What are the various Working modes of I 2 C Bus and explain them with suitable Schematic diagrams. [16] R05 Code No. N0501 Set No.1 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech I Semester Supplementary Examinations, November, 2011 EMBEDDED SYSTEMS (Common to Computer Science &Engineering, Information Technology and Electronics & Control Engineering) Time: 3 hours Max. Marks: 80 Answer any FIVE Questions All Questions carry equal marks ***** 1. a) List the advanced microprocessors and microcontrollers used in embedded systems and present their role. [8] b) What are the functional circuits in a chip or core of a microcomputer? Explain them. [8] 2. a) Explain the following, with respect to the 8051 microcontroller register Organization. i) PC and DPTR ii) PSW [8] b) Discuss about external interrupts and software generated interrupts in 8051 microcontroller. [8] 3. Explain the following terms, relevant to programming the 8051 microcontroller. a) Lines of code b) Labels c) Instructions and d) Comments [16] 4. a) Explain about the jump and call program ranges with suitable diagram. [8] b) Write an assembly language program to add the byte in external RAM location 02CDh to internal RAM location 19h and put the result in to external RAM locations 00C0h(LSB) and 00C1h(MSB). Place comments on each line of code. [8] 5. Explain how the serial communication employed in 8051 microcontroller with suitable diagrams and necessary programming concepts. [16] 6. a) Explain the problem of sharing data by Multiple Tasks and Routines. [8] b) Explain how are Tasks different from functions and ISRs [8] 7. a) Explain the Operating System units in an RTOS kernel. [8] b) Explain the tools availability in various RTOS. [8] 8. a) Explain the design approach of an Elevator Controller. [8] b) What is meant by Instruction level parallelism? Explain the same, in brief. [8] Code No. N0501 R05 Set No.2 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech I Semester Supplementary Examinations, November, 2011 EMBEDDED SYSTEMS (Common to Computer Science & Engineering, Information Technology and Electronics & Control Engineering) Time: 3 hours Max. Marks: 80 Answer any FIVE Questions All Questions carry equal marks ***** 1. a) Explain about embedded processor for a complex system. [8] b) What are the techniques of power and energy management in an embedded system? Explain them in brief. [8] 2. a) Describe the various operating modes of the UART in brief. [8] b) Explain the following, relevant to serial data input/output in 8051 Microcontroller. i) Serial data interrupts ii) Data Transmission and Reception [8] 3. a) Explain how to perform testing programs on a single-board computer. [8] b) Write an assembly language program to add two 16-bit numbers. The numbers are 2E5Fh and A3B4h. Store the sum in R7 and R6. R6 should have the lower byte. Write comment on this. [8] 4. a) Explain the concept of interrupts and returns with suitable example. [8] b) Write an assembly language program to increment the contents of RAM locations 13h, 14h and 15h using indirect addressing. Place comments on each line of code. [8] 5. With the aid of neat diagram the design approach of interfacing Analog-to- Digital converter to 8051 microcontroller based embedded system.Write down the necessary program. [16] Set No.3 R05 Code No. N0501 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 6. a) With an example, explain the concept of deadlock situation during multitasking execution. [8] b) Explain the different scheduling methods used to control Task State Transition. [8] 7. a) Explain the hard real-time Scheduling Considerations. [8] b) Explain the terms “Semaphores and Queues” relevant to RTOS in an embedded system. [8] 8. a) Write notes on Internet-Enabled Systems. [8] b) Describe the applications and specifications of CAN Bus, in brief. [8] Set No.3 R05 Code No. N0501 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech I Semester Supplementary Examinations, November, 2011 EMBEDDED SYSTEMS (Common to Computer Science & Engineering, Information Technology and Electronics & Control Engineering) Time: 3 hours Max. Marks: 80 Answer any FIVE Questions All Questions carry equal marks ***** 1. a) Explain the components of embedded system hardware. [8] b) Explain the importance of the following processors in embedded Systems. i) Digital signal processor ii) ASSP [8] 2. a) Explain the following, relevant to serial data input/output in 8051 Microcontroller. i) Serial data interrupts. ii) Data Transmission and Reception. [8] b) Draw the programming model of the 8051 microcontroller that has Collection of 8-and 16-bit registers and 8-bit memory locations. [8] 3. a) Explain the following, relevant to development tools using in assembly language programming. i) Simulators ii) Debuggers [8] b) What are the diamond decision elements? Discuss about them with simple 8051 decision instructions. [8] 4. a) Explain with suitable example, how to perform unsigned multiplication using relevant mnemonics. [8] b) Write an assembly language program to increment the contents of RAM locations 13h, 14h and 15h using indirect addressing. Place comments on each line of code. [8] 5. a) Explain the importance of TI flag and RI flag in serial data communication. [8] b) Write the 8051 assembly language program for detection and identification of key activation. [8] Set No.4 Code No. N0501 R05 1of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 6. a) Differentiate the terms ‘OS’ and ‘Real Time OS’ with respect to various Features. [8] b) Explain, which is the entity controlling (Scheduling) the transitions from one state to another in a task? [8] 7. a) What does embedded Software development mean? Explain in brief the different stages in the development and testing of an application. [8] b) Explain the terms “Semaphores and Queues” relevant to RTOS in an embedded system. [8] 8. a) What is meant by CAN Bus? List out the features of CAN Bus. [8] b) Give the features and a comparison of exemplary high performance ARM family of processors. [8] Set No.4 Code No. N0501 R05 2of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0401/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 COMPUTER NETWORKS ( Common to Electronics & Communication Engineering, Electronics & Instrumentation Engineering, Bio-Medical Engineering, Mechatronics and Electronics & Telematics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) How would you utilize an existing telephone network for Computer-to-Computer data communications? (b) “Bad Timing” is also a problem for OSI reference model. Discuss. [8+8] 2. (a) Television channels are 6MHz wide. How many bits/sec can be sent if four level digital signals are used? Assume a noiseless channel (b) How does a virtual circuit differ from a physical circuit? What advantages would a virtual circuit provide? [8+8] 3. (a) The following data fragment occurs in the middle of a data stream for which the character-stuffing algorithm described in the text is used: DLE, STX, A, DLE, B, DLE, ETX. What is the output after bit stuffing? (b) Distinguish between SLIP and PPP? [8+8] 4. What is a token? Discuss the protocol of token ring LAN in general. Discuss with example how priority is implemented in a token ring LAN? [16] 5. (a) How the complexity at Network layer & Transport layer varies with connection oriented and connectionless service. (b) Suppose Network layer provides connection less service, Transport layer con- nection oriented service, then how reliability is achieved. (c) How Virtual circuit is different from Physical connection. [8+4+4] 6. (a) What do we mean when we say IP is a best-effort delivery service? Explain. (b) Which fields in IP header change and which fields are fixed as the packet goes from source to destination? (c) How source quench is supported by ICMP? (d) What the advantages of IPv6 over IPv4? [4+3+4+5] 7. (a) Why does the maximum packet lifetime, T, have to be large enough to ensure that not only the packet, but also its acknowledgments have vanished. (b) What are the applications which prefer UDP to TCP. Give suitable justifica- tions? (c) What are the disadvantages when Nagle’s algorithm is used on badly congested network? [5+6+5] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0401/R05 Set No. 1 8. (a) What are the facilities available on the web for locating information? (b) How web can be used for e-commerce? [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0401/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 COMPUTER NETWORKS ( Common to Electronics & Communication Engineering, Electronics & Instrumentation Engineering, Bio-Medical Engineering, Mechatronics and Electronics & Telematics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Discuss the basic functions performed by different layers of ISO-OSI reference model. (b) List two advantages and two disadvantages of having international standards for network protocols. [10+6] 2. (a) What are the different media used in data communication systems? Compare their merits and demerits? (b) Assume a data stream is made of ten 0’s. Encode the stream, using Manchester and differential Manchester coding schemes. How many Changes (vertical line) can you find for each scheme. [8+8] 3. (a) Discuss the error control technique which is commonly used in data network. What value of N is used in go-back-N ARQ technique used in ARPANET and why? (b) Imagine that you are writing the data link software for a line used to send data to you, but not from you. The other end uses HDLC, with a 3-bit sequence number and a window size of seven frames. You would like to buffer as many out of sequence frames as possible to enhance efficiency, but you are not allowed to modify the software on the sending side. Is it possible to have a receiver window greater than one, and still guarantee that the protocol will never fail? If so, what is the largest window that can be safely used? [8+8] 4. (a) Compare the five different types of cabling (Ethernet ) (b) A 1-km long, 10-Mbps CSMA/CD LAN (not 802.3) has a propagation speed of 200 m/µsec. Data frames are 256 bits long, including 32 bits of header, check- sum, and other overhead. The first bit slot after a successful transmission is reserved for the receiver to capture the channel to send a 32-bit acknowledge- ment frame. What is the effective data rate, excluding overhead, assuming that there are no collisions? [4+4] 5. (a) What is Multicasting. How it is different from broadcasting. How do you construct a multicast tree. Explain with an example. (b) What are the applications of multicasting. [10+6] 6. (a) How congestion is controlled in V.C. subnets? 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0401/R05 Set No. 2 (b) What is Choke packet? How use of choke packets helps in congestion control? [8+8] 7. (a) How TCP connections are established? (b) Draw the finite state machine diagram for connection establishment of TCP and explain different states of the finite state machine. [6+10] 8. (a) What are the facilities available on the web for locating information? (b) How web can be used for e-commerce? [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0401/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 COMPUTER NETWORKS ( Common to Electronics & Communication Engineering, Electronics & Instrumentation Engineering, Bio-Medical Engineering, Mechatronics and Electronics & Telematics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) What are the advantages of having layered architecture? Mention the layers of ISO-OSI reference model? (b) What is Internet? Mention some of the applications of Internet? [8+8] 2. (a) What is the difference between a passive star and an active repeater in a fiber optic network? (b) Discuss the features of integrated service digital network? [6+10] 3. (a) Discuss one bit sliding window protocol? What happens if both sides simul- taneously send an initial packet? (b) Is HDLC protocol bit oriented or character oriented? Explain the frame for- mat? [8+8] 4. (a) Discuss about MAC addresses? (b) Explain about a bit-map collision free protocol? [8+8] 5. (a) Is it possible to use static shortest path algorithm in mobile networks. Explain. (b) What are the characteristics that should be possessed by a routing algorithm that can be used in mobile networks. [8+8] 6. (a) Explain how service differentiation can be achieved using type of service field. (b) The IP header checksum only verifies the integrity of IP header. Discuss the pros and cons of doing the checksum on the header part versus on the entire packet. (c) Identity the range of IPv6 addresses spanned by Class A, Class B and Class C. [5+6+5] 7. (a) What is Pay load? What is the payload size of the maximum length message that fits in a single AAL 3/4 cell? (b) When a 1024 bytes message is sent with AAL 3/4, what is the efficiency obtained? In other words, what fraction of the bits transmitted are useful data bits? Repeat the problem for AAL 5. [6+10] 8. (a) What is security? What is network security? What is information security? How network security and information security are related? 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0401/R05 Set No. 3 (b) What are the Pros and Cons of providing security? (c) Who are the people who cause security problems? [6+5+5] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0401/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 COMPUTER NETWORKS ( Common to Electronics & Communication Engineering, Electronics & Instrumentation Engineering, Bio-Medical Engineering, Mechatronics and Electronics & Telematics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Compare point -to-point channels with broadcast channels along with suitable examples? (b) A collection of five routers is to be collected in a point-to-point subnet. Be- tween each pair of routers, the designers may put a high speed line, a medium- speed line, a low-speed line, or no line. If it takes 100ms of computer time to generate and inspect each topology, how long will it take to inspect all of them to find the one that best matches the expected load? [8+8] 2. (a) With a neat diagram discuss about the electromagnetic spectrum? (b) Make a comparison of circuit switching, message switching and packet switch- ing with a diagram showing the timing of events? [6+10] 3. (a) Discuss the error control technique which is commonly used in data network. What value of N is used in go-back-N ARQ technique used in ARPANET and why? (b) Imagine that you are writing the data link software for a line used to send data to you, but not from you. The other end uses HDLC, with a 3-bit sequence number and a window size of seven frames. You would like to buffer as many out of sequence frames as possible to enhance efficiency, but you are not allowed to modify the software on the sending side. Is it possible to have a receiver window greater than one, and still guarantee that the protocol will never fail? If so, what is the largest window that can be safely used? [8+8] 4. (a) Explain in detail binary count down collision free protocol? (b) Give the detailed description of 802.3 frame format? [8+8] 5. (a) Consider a network in which frequent link failures occur. In such an environ- ment which one is preferred, Static/ Dynamic routing. Why. (b) What is the effect of router crashes on Virtual circuits. How do you restore virtual circuit when routers crash. [10+6] 6. (a) Suppose that instead of using 16 bits for the network part of a class B address 20 bits have been used. How many class B networks would there have been. (b) A Class B network on the internet has a subnet mask of 255.255.240.0 what is the maximum number of hosts per subnet. 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0401/R05 Set No. 4 (c) Explain routing in ATM networks. [4+4+8] 7. (a) Network layer can provide both connection oriented service and connection less service. Similar is the case with Transport layer, then why two different layers are required. (b) What are the Transport layers Quality of Service parameters? [8+8] 8. (a) When external viewers are needed? How does a browser know which one to use? (b) What is the difference in transferring compressed and uncompressed video? [6+10] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0202/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, Nov 2011 POWER SYSTEM ANALYSIS (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 1. For the given network shown in figure 1d connections form: (a) Graph (b) Tree (c) Co-tree (d) Cut-set. [16] Figure 1d 2. Form the Z bus for the given network connections: [16] Self Mutual Bus code (element) Impedence Bus code Impedence 1-2 (1) 0.6 1-3 0.5 1-2 (1) 0.1 3-4 0.5 1-2 (2) 0.4 1-2 (1) 0.2 2-4 0.2 3. Explain briefly the method of dealing with voltage controlled buses in load flow studies. Explain with G-S method. [16] 4. Explain step-by-step algorithm of N-R (Polar form) algorithm including P-V buses. [16] 5. (a) What are the advantages of p.u system. 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0202/R05 Set No. 1 (b) For the network shown in figure 5b draw p.u impedance diagram. [10+6] Figure 5b 6. (a) The voltages across a 3 phase unbalanced load are V ab = 300 V 0; V bc = 300 -90 0 ; V ca = 800 143 0 respectively. Determine the sequence components of voltages. (b) Symmetrical components of unbalanced 3 phase currents are I 0 = 3 -30 0 ; I 1 = 5 90 0 ; and I 2 = 4 30 0 . Obtain original unbalanced phasors. [8+8] 7. A 50 Hz synchronous generator with H = 2.5 MJ / MVA supplies power to infinite bus as shown in figure 7. Derive an expression for power delivered to infinite bus and plot power angle curve. [16] Figure 7 8. (a) Explain the methods of improving transient stability. (b) A 50 Hz synchronous generator with inertia constant H = 4 MT/MVA and x d equal to 0.15 pu feeds 1.0 pu power to an infinite bus at 0.8 pf lagging. Via a network with an equivalent reactance of 0.3 pu. A 3 phase fault is sustained for 100 milli seconds at the terminals. Plot swing curve through t = 0.25 secs. [8+8] 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0202/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, Nov 2011 POWER SYSTEM ANALYSIS (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 1. Form the network matrices Z loop using non-singular transformation for the network connections: [16] element p-r 1 1-2 (1) 2 1-2(2) 3 1-3 4 2-4 5 3-5 Self Bus code Impedence 1-2 0.6 1-3 0.5 3-4 0.5 1-2(2) 0.4 2-4 0.2 Mutual Bus code Impedence 1-2(1) 0.1 1-2(1) 0.2 2. The bus impedance matrix for the network connection is found to be (G-Ground): There is a line outage and the line from bus 1 to 2 is removed. Using the method of building algorithm determine the new bus impedance matrix. [16] Element Bus code impedance 1 1-G j0.2 2 1-2 j0.5 3 1-3 j0.2 4 1-4 j0.3 5 2-G j0.3 6 2-4 j0.6 7 3-4 j0.1 1 2 3 4 1 0.150 0.075 0.140 0.135 Z bus = 2 0.075 0.1875 0.090 0.0975 3 0.140 0.090 0.2533 0.210 4 0.135 0.0975 0.210 0.2475 3. Why direct simulation of load flow is not possible? and mention data required for load flow solution? [16] 4. With the help of flow chart explain the computational procedure used for load flow using Fast Decoupled method. [16] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0202/R05 Set No. 2 5. (a) Prove that Base impedance = KV 2 LL(Base) MV A 3−φ(Base) (b) Obtain pu impedance diagram of the power system of figure 5b. Choose base quantities in generagor circuit. Generator: 20 MVA, 11 KV, X = 0.1 pu Transformer: 25 MVA, 11/33 KV, X = 0.1 pu Load: 10 MVA, 33 KV, 0.8 pf lag. [16] Figure 5b 6. (a) P abc is 3 phase power in a circuit and P 012 is power in the same circuit in terms of symmetrical components. Show that abc = 012 . (b) The line currents in a 3 phase supply to an un balanced load are respectively I a = 10 + j20; I b = 12 - j10; I c = -3 - j5 Amp. phase sequence is abc. Determine the sequence components of currents. [8+8] 7. A 275 KV transmission line has following line constants. A = 0.85 5 0 , B = 200 75 0 The line delivers 150 MW with |V S | = |V R | = 275KV . Determine synchronizing power coefficient. [16] 8. A 50 Hz, 500 MVA, 400 KV generator (including transformer) is connected to a 400 KV infinite bus bar through on inter connector. The generator has H = 2.5 MJ/MVA. Voltage behind transient reactance 420 KV and supplies 460 MW. The transfer reactance between generator and bus bar under various conditions are Prefault = 0.5 pu; During fault = 1.0 pu; Post fault = 0.75 pu. Calculate swing curve using ∆T = 0.05 sec, with fault cleared at 0.1 secs. The period of study is 0.2 secs. [16] 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0202/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, Nov 2011 POWER SYSTEM ANALYSIS (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 1. Form the network matrices Z loop using non-singular transformation for the network connections: [16] element p-r 1 1-2 (1) 2 1-2(2) 3 1-3 4 2-4 5 3-5 Self Bus code Impedence 1-2 0.6 1-3 0.5 3-4 0.5 1-2(2) 0.4 2-4 0.2 Mutual Bus code Impedence 1-2(1) 0.1 1-2(1) 0.2 2. Explain modification of the bus impedance matrix for changes in the network.[16] 3. For the power system shown in fig. obtain the voltage at bus 2 at the end of the first iteration use G-S method. Line impedances are shown in fig bus 1 is the slack bus with voltage at 1 0 Pu. [16] P2 + jQ2 = (-5.96+j1.46)Pu and |V 3 | =1.02 Pu. Assume V (0) 3 = 1.02 0 0 and V (0) 2 = 1 0 0 1 2 3 (0.04+j0.06)Pu (0.02+j0.03)Pu 4. Derive N-R (Polar form) equations and N-R (Rectangular form) equations and explain difference between these methods. [16] 5. (a) A 3 phase fault through fault impedance Z f = 0.08 occurs at point F on the system shown in figure 5. The system is operating at noload and rated voltage. Determine bus voltages and line currents during the fault. (b) State the assumptions made in short circuit analysis. [10+6] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0202/R05 Set No. 3 Figure 5 6. (a) P abc is 3 phase power in a circuit and P 012 is power in the same circuit in terms of symmetrical components. Show that abc = 012 . (b) The line currents in a 3 phase supply to an un balanced load are respectively I a = 10 + j20; I b = 12 - j10; I c = -3 - j5 Amp. phase sequence is abc. Determine the sequence components of currents. [8+8] 7. A generator supplies 1.0 pu power to an infinite bus as shown in figure 7. The terminal voltage and infinite bus voltage are 1.0 pu. All the reactances are on a common base. Determine steady state stability limit: [16] (a) when both lines are in (b) when one line is switched off. Figure 7 8. (a) Derive swing equation of a single machine connected to infinite bus. (b) A synchronous generator is feeding 250 MW to a 50 Hz large network over a double circuit line. The maximum steady state power that can be transmitted over line with both circuits in operation is 500 MW and is 350 MW with any one of the circuit. A solid 3 phase fault at network-end of one the line causes it to trip. Find critical clearing angle before which circuit breakers have to trip. [8+8] 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0202/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, Nov 2011 POWER SYSTEM ANALYSIS (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 1. Form the network matrices Z loop using non-singular transformation for the network connections: [16] element p-r 1 1-2 (1) 2 1-2(2) 3 1-3 4 2-4 5 3-5 Self Bus code Impedence 1-2 0.6 1-3 0.5 3-4 0.5 1-2(2) 0.4 2-4 0.2 Mutual Bus code Impedence 1-2(1) 0.1 1-2(1) 0.2 2. The bus impedance matrix for the network connection is found to be (G-Ground): There is a line outage and the line from bus 1 to 2 is removed. Using the method of building algorithm determine the new bus impedance matrix. [16] Element Bus code impedance 1 1-G j0.2 2 1-2 j0.5 3 1-3 j0.2 4 1-4 j0.3 5 2-G j0.3 6 2-4 j0.6 7 3-4 j0.1 1 2 3 4 1 0.150 0.075 0.140 0.135 Z bus = 2 0.075 0.1875 0.090 0.0975 3 0.140 0.090 0.2533 0.210 4 0.135 0.0975 0.210 0.2475 3. The converged load flow solution is available how do you determine the slack bus complex power injection and system total loss? [16] 4. With the help of flow chart explain the computational procedure used for load flow using Fast Decoupled method. [16] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0202/R05 Set No. 4 5. (a) A 3 phase fault through fault impedance Z f = 0.08 occurs at point F on the system shown in figure 5. The system is operating at noload and rated voltage. Determine bus voltages and line currents during the fault. (b) State the assumptions made in short circuit analysis. [10+6] Figure 5 6. (a) P abc is 3 phase power in a circuit and P 012 is power in the same circuit in terms of symmetrical components. Show that abc = 012 . (b) The line currents in a 3 phase supply to an un balanced load are respectively I a = 10 + j20; I b = 12 - j10; I c = -3 - j5 Amp. phase sequence is abc. Determine the sequence components of currents. [8+8] 7. A 3 phase 50 Hz transmission line is 200 Km long. The line parameters are r = 0.1 ohm /Km; x = 0.25 ohm/km; y = 3 × 10 −6 mho / Km. The line is represented by nominal π model. I f |V S | = |V R | = 200KV determine steady state stability limit. [16] 8. A 50 Hz, 500 MVA, 400 KV generator (including transformer) is connected to a 400 KV infinite bus bar through on inter connector. The generator has H = 2.5 MJ/MVA. Voltage behind transient reactance 420 KV and supplies 460 MW. The transfer reactance between generator and bus bar under various conditions are Prefault = 0.5 pu; During fault = 1.0 pu; Post fault = 0.75 pu. Calculate swing curve using ∆T = 0.05 sec, with fault cleared at 0.1 secs. The period of study is 0.2 secs. [16] 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0402/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 OPTICAL COMMUNICATIONS ( Common to Electronics & Communication Engineering and Electronics & Telematics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Derive the wave equation for a step index fiber. (b) Calculate the critical angle, maximum entrance angle and NA for a step index fiber having a core index of 1.60 and a cladding index of 1.49. Derive the expressions used. [8+8] 2. (a) A single mode step index fiber with a core refractive index of 1.49 has a critical bending radius of 10.4 mm when illuminated with light at a wavelength of 1.3 µm. If the cut off wavelength for the fiber is 1.15 µm, calculate the relative refractive index difference. (b) Compare stimulated Brillouin and stimulated Raman scattering in optical fiber. [8+8] 3. (a) Explain the theory of material dispersion and find an expression for RMS material dispersion. (b) A single mode step index fiber has a zero dispersion wavelength of 1.29 µm and exhibits total first order dispersion of 3.5 ps m −1 km −1 at a wavelength of 1.32 µm. Determine the total first order dispersion in the fiber at a wavelength of 1.54 µm. [8+8] 4. (a) List out the advantages of semiconductor laser diodes over LED, when used for fiber transmission. (b) An LED is made with gallium arsenide dopped with aluminium and has an energy band gap of 1.55 eV. What is its dominant emission wavelength.[8+8] 5. (a) With the help of neat diagrams describe lens coupling mechanisms to improve coupling efficiency from a fiber optic source. (b) Differentiate between Lambertian and monochromatic optical sources in terms of power coupling into a single mode fiber. (c) What is equilibrium numerical aperture? Explain the significance of equilib- rium numerical aperture on source to fiber power coupling. [6+5+5] 6. (a) Describe important specifications of a semiconductor photo diode to be suit- able for fiber optic communications. (b) Compute the range of quantum efficiency of an InGaAs PIN diode in the wavelength range between 1200 nm and 1600 nm if the responsivity of the diode is specified to be more than 0.6 A/W in the required wavelength region. 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0402/R05 Set No. 1 Use the necessary physical constants listed. [8+8] Speed of light in vacuum =3 × 10 8 m/s Electron charge =1.602 × 10 −19 C Planck’s constant =6.6256 × 10 −34 J-S Boltzman’s constant =1.38 × 10 −23 J/K Band gap energy of InGaAs = 0.73 eV at 300K 7. Write a short note on the following: (a) System considerations in the design of a fiber optic link. (b) System rise time calculation with the help of an example. [8+8] 8. (a) How can the maximum achievable transmission distance with a set of active and passive components in an optical link be calculated? Explain with the help of necessary transmission curves. (b) Describe eye patterns analysis for assessing the performance of a digital fiber optic link. Is it possible to estimate BER also from eye patterns? [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0402/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 OPTICAL COMMUNICATIONS ( Common to Electronics & Communication Engineering and Electronics & Telematics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) What are the different types of optical fibers, explain about them in detail with the necessary figures, graphs and equations? (b) An optical fiber with core and cladding refractive indices as 1.49 and 1.48 respectively is immersed in a fluid. Determine the refractive index of this fluid if the maximum acceptance angle of the immersed fiber is 88 0 . Comment on the result. [8+8] 2. (a) The mean optical power launched in to an optical fiber link is 1.5 mw and the fiber has an attenuation of 0.5 dB km −1 . Determine the maximum possible link length without repeaters (assuming loss less connectors) when the minimum mean optical power level required at the detector is 2 µw. (b) Briefly describe the following linear scattering losses in optical fiber. i. Rayleigh scattering ii. Mie scattering. [8+8] 3. (a) Derive the expression for the pulse dispersion in a parabolic index medium and in a planar step index wave guide. (b) For a fiber, material dispersion parameter is 58.8 ps/ nm/ km. The relative spectral width δ λ /λ of the source is 0.0012 at the wavelength of 850 nm. Calculate the RMS pulse broadening per km. [8+8] 4. (a) Draw the driving circuit laser transmitter and explain its operation. (b) A Ga As laser emitting at 800 nm has a 400 µm long cavity with a refractive index n = 3.6. If the gain of exceeds the total loss α t throughout the range 750 nm < λ < 850 nm, how many modes will exist in the laser, also find the frequency separation of the modes. [8+8] 5. Write short notes on the following: (a) Power coupling from a vertical Cavity Surface Emitting Laser (VCSEL) diode to a single mode fiber. (b) Radiation patterns in axial and vertical planes from surface emitting LED and edge emitting LED. [8+8] 6. (a) Describe important specifications of a semiconductor photo diode to be suit- able for fiber optic communications. 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0402/R05 Set No. 2 (b) Compute the range of quantum efficiency of an InGaAs PIN diode in the wavelength range between 1200 nm and 1600 nm if the responsivity of the diode is specified to be more than 0.6 A/W in the required wavelength region. Use the necessary physical constants listed. [8+8] Speed of light in vacuum =3 × 10 8 m/s Electron charge =1.602 × 10 −19 C Planck’s constant =6.6256 × 10 −34 J-S Boltzman’s constant =1.38 × 10 −23 J/K Band gap energy of InGaAs = 0.73 eV at 300K 7. (a) Describe a method to carryout rise time budget analysis for a fiber optic link (b) Explain the procedure to determine the maximum allowable RZ and NRZ data rates from rise time budget analysis. (c) Explain the effect of mode mixing factor, q, on modal dispersion induced rise time. [8+4+4] 8. (a) How is excess mode filling during launching of optical power compensated for stabilized measurement of attenuation in optical fibers? Suggest possible methods. (b) With at least 4 types of line codes, explain the improvement in quality of transmission of signals in optical fibers. [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0402/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 OPTICAL COMMUNICATIONS ( Common to Electronics & Communication Engineering and Electronics & Telematics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Briefly explain about the optical fiber construction details and show a figure for transmission of light rays and discuss about the refractive index distribution with a graph. (b) A fiber with parameters n 1 = 1.46, n 2 = 1.455 and a = 3 µm has to be used as single mode fiber in a communication system. Determine a suitable operating wavelength. [8+8] 2. (a) Describe the radiative losses in fibers resulting in absorption. (b) Explain the mechanisms of dispersion of signals in optical fibers. [8+8] 3. (a) Calculate the insertion loss of the connector when the power in the fiber is 100 µw and the output power after the connector is 80 µw. (b) A multimode graded index fiber exhibits the pulse broadening of 0.2 µs over a distance of 15 Km. Estimate: i. Optimum bandwidth of fiber ii. Dispersion per unit length iii. Bandwidth length product. [8+8] 4. Explain the modulation capability of the laser diode and its temperature effects. How to compensate for variations in temperature? [16] 5. (a) Describe various mechanisms usable to increase power coupling from an LED into a single mode fiber. Discuss the intricacies involved. (b) An LED with circular emitting region of radius 200 µm and an axial radiance of 60 W / cm 2 - Sr at 100mA drive current is coupled into a step index fiber of 50µm radius and 0.24 numerical aperture. i. Compute the power coupled into this step index fiber. ii. Calculate the power coupled from the source specified about into a parabolic index graded-index fiber of same size as the step index fiber with n 1 =1.485 and ∆ = 0.01. [6+5+5] 6. (a) Differentiate between the photodiode parameters, ’quantum limit’ and ’dark current’. (b) The quantum efficiency of an In GaAs PIN diode is 80% in the wavelength range between 1300 nm and 1600 nm. Compute the range of responsivity of the PIN diode in the specified wavelength range. [8+8] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0402/R05 Set No. 3 7. (a) Describe a method to carryout rise time budget analysis for a fiber optic link (b) Explain the procedure to determine the maximum allowable RZ and NRZ data rates from rise time budget analysis. (c) Explain the effect of mode mixing factor, q, on modal dispersion induced rise time. [8+4+4] 8. (a) How can the maximum achievable transmission distance with a set of active and passive components in an optical link be calculated? Explain with the help of necessary transmission curves. (b) Describe eye patterns analysis for assessing the performance of a digital fiber optic link. Is it possible to estimate BER also from eye patterns? [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0402/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 OPTICAL COMMUNICATIONS ( Common to Electronics & Communication Engineering and Electronics & Telematics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Draw the block schematic of a general communication system and explain the functions of each block. (b) Discuss briefly about the leaky modes and mode coupling losses in the fiber optic communication. [8+8] 2. (a) Explain the core and cladding losses in an optical fiber and derive the expres- sion for those losses.. (b) Discuss different scattering losses in SiO 2 fiber at various operating wave- lengths in detail. [8+8] 3. (a) Write notes on “dispersion shifted fiber and dispersion compensating fiber”. (b) Explain in detail about the refractive index profile dispersion and dispersion Vs bandwidth of the optical fiber. [8+8] 4. (a) A single mode fiber has the following parameters normalized frequency (V)=2.40, core refractive index (n 1 ) = 1.46, core diameter (2a) = 8 µm, numerical aper- ture(NA)=0.1. Estimate the total insertion loss of a fiber joint with a lateral misalignment of 1 mm and an angular misalignment of 1 0 . (b) Explain the principle of operation of injected laser diode with a neat diagrams. [8+8] 5. (a) With the help of neat diagrams describe lens coupling mechanisms to improve coupling efficiency from a fiber optic source. (b) Differentiate between Lambertian and monochromatic optical sources in terms of power coupling into a single mode fiber. (c) What is equilibrium numerical aperture? Explain the significance of equilib- rium numerical aperture on source to fiber power coupling. [6+5+5] 6. (a) List out the materials used and the desired features of a photo diode for usability in fiber optic links. (b) Derive an expression for total mean-square noise signal in a photo detector and hence the Signal-to-Noise Ratio at the output of a receiver. [8+8] 7. (a) Describe a method to carryout rise time budget analysis for a fiber optic link (b) Explain the procedure to determine the maximum allowable RZ and NRZ data rates from rise time budget analysis. 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0402/R05 Set No. 4 (c) Explain the effect of mode mixing factor, q, on modal dispersion induced rise time. [8+4+4] 8. (a) Is it possible to establish Bi-directional wavelength division multiplexed optical communication link? Justify your answer with relevant equations, diagrams numerical values and description. (b) How is the maximum achievable data rate estimated from dispersion measure- ments for RZ and NRZ formats of data? (c) List out the differences between time domain and frequency domain approaches in measurements of inter modal dispersion. [5+6+5] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0203/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 POWER SYSTEM OPERATION AND CONTROL (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Explain the role of incremental fuel cost in thermal plant operation? (b) Draw Heat curve and explain its significance. [8+8] 2. The fuel cost functions in Rs./hr. for two thermal plants are given by C 1 =420+9.2P 1 +0.004P 1 2 , 100 ≤ P 2 ≤200 C 2 =350+8.5P 2 +0.0029P 2 2 , 150≤P 3 ≤500 Where P 1 , P 2 , P 3 are in MW and plant outputs are subjected to the following limits, Determine the optimal scheduling of generation if the total load is 640.82MW. Estimate value of λ = 12Rs. /MWh P L(pu) = 0.0346P 1(pu) 2 +0.00643 P 2(pu) 2 . [16] 3. Describe the objective function is minimize the cost of generation of hydro thermal scheduling. [16] 4. Two generators rated 100 MW and 200 MW are operating in parallel. The droop characteristics of their governors are 3% and 5% respectively from no load to full load. Assuming that the generators are operating at 50 Hz at no load, how would a load of 300 MW be shared between them? What will be the system frequency at this load? Assume free governor operation. Repeat the problem if both the governors have a droop of 3%. [16] 5. (a) Discuss in detail the importance of load frequency problem. (b) A 100 MVA synchronous generator operates on full load at a frequency of 50 Hz. The load is suddenly reduced to 50 MW. Due to time lag in governor system, the steam valve begins to close after 0.4 seconds. Determine the change in frequency that occurs in this time. Given the inertia constant H= 5 kW-sec/kVA of generator rating. [8+8] 6. (a) Explain how the tie-line power deviation can be incorporated in two-area sys- tem block diagram. (b) Two areas of a power system network are interconnected by a tie-line, whose capacity is 500 MW, operating at a power angle of 35 0 . If each area has a capacity of 5000 MW and the equal speed regulation of 3 Hz/Pu MW, determine the tie line power deviation for step change in load of 85 MW occurs in one of the areas. Assume that both areas have the same inertia constants of H = 4 sec. [8+8] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0203/R05 Set No. 1 7. For an isolated power system with integral control has the following data: Rating of the generator P r =100 MW Nominal operating load P D =50 MW Inertia constant H=5.0 sec Speed regulation of the governor R=2.5 Hz/ pu MW If the load would increase 1 pu for 1 % frequency increase and area is controlled by an integral controller, estimate the critical magnitude of the gain when the load is increased by 10 MW. [16] 8. The load at receiving end of a three-phase, over head line is 25.5 MW, power factor 0.8 lagging, at a line voltage of 33 kV. A synchronous compensator is situated at receiving end and the voltage at both the ends of the line is maintained at 33 kV. The line has a resistance of 4.5 ohms per phase and inductive reactance (line to neutral) of 20 ohms per phase. Calculate the maximum value of power that can be transmitted if the thermal rating of the line is not exceeded. Assuming that without compensation, the line was fully loaded, hence the current under the new condition is unchanged. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0203/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 POWER SYSTEM OPERATION AND CONTROL (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) What is the need of optimal operation of power systems? (b) The fuel costs for two plants are given by C 1 = 0.15 P 1 2 +30P 1 +25, C 2 = 0.17 P 2 2 +28P 2 +20 where C is in Rs/Hr and P is in MW. If both units operate at all time and maximum and minimum load on each unit are 100 MW and 20 MW respectively determine the economic operating schedule of the plant for loads of 40 MW, 120 MW. [12+4] 2. (a) Assuming any relevant data and notation, derive the transmission loss formula. (b) Discuss about the optimum generator allocation with out line losses. [16] 3. Explain optimization problem in hydro thermal system, a non-linear programming technique in conjunction with the first order gradient method. [16] 4. Two turboalternators rated for 110MW and 210MW have a governor droop char- acteristics of 5% from no load to full load. They are connected in parallel to share the load of 250MW. Determine the load shared by each machine assuming free governor action. [16] 5. With first order approximation explain the dynamic response of an isolated area for load frequency control. [16] 6. An interconnected system has a capacity of about 5×10 5 MW. The equivalent inertia and damping constants are approximately M=8 pu MW/pu frequency/sec and B=1.5 both on the system capacity base. It is necessary to correct for time errors every so often. The electrical energy involved is not insignificant. (a) Assume that a time error of 1 sec is to be corrected by deliberately supplying a power unbalance of a constant amount for a period of 1 hour. Find the power unbalance required. Express the amount in MWH. (b) Is this energy requirement a function of power unbalance? Assume a power unbalance is applied to the system of a duration ∆T. During this period, the unbalance of power constant; after the period it is zero. Does it make a difference if the length of the time is long or short? Show the response of the system. The time deviation is the integral of the frequency deviation. [16] 7. Discuss the importance of combined load frequency control and economic dispatch control with a neat block diagram. [16] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0203/R05 Set No. 2 8. A regional step-down substation is connected with a power center via a single circuit 110 kV line, 80 km long having a resistance of 28 ohms and reactance of 34 ohms. The maximum rated load (MVA) of the substation is S D =22+j20. The operating conditions of power consumers require that at this load voltage drop across the line should not exceed 6 %. In order to reduce the voltage drop, standard single phase 0.66 kV, 40 kVAR capacitors are to be switched in series in each phase of the line as shown in figure 8. Determine the required number of capacitors, rated voltage and installed capacity of the capacitor bank. Make these calculations disregarding the power loss in the line. [16] Figure 8 ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0203/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 POWER SYSTEM OPERATION AND CONTROL (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) What is Production cost of power generated and incremental fuel rate? (b) Write the expression for hourly loss of economy resulting from error in Incre- mental cost representation. [8+8] 2. Derive an expression for the hourly loss in economy due to error in the representa- tion of input data. [16] 3. In a two plant operation system, the Hydro plant is operate for 12 hrs. during each day and the hydro plant is operate all over the day. The characteristics of the steam and hydro plants are C T = 0.3 P GT 2 +20 PGT + 5 Rs/hr W H =0.4P GH 2 +20 PGH m 3 / sec When both plants are running, the power flow from steam plant to load is 300 MW and the total quantity of water is used for the hydro plant operation during 12 hrs is 180×10 6 m 3 . Determine the generation of hydro plant and cost of water used. [16] 4. (a) Explain the necessity of maintaining a constant frequency in power system operation. (b) Two generators rated 100 MW and 400 MW are operating in parallel. The droop characteristics of their governors are 2% and 4% respectively from no load to full load. Assuming that the generators are operating at 50 Hz at noload, how would a load of 500 MW be shared between them? What will be the system frequency at this load? Assume free governor operation. [6+10] 5. Two generating stations A and B have full load capacities of 200 MW and 75 MW respectively. The inter connector connecting the two stations has an induction motor/synchronous generator (plant C) of full load capacity of 25 MW. Percentage changes in speeds of A, B and C are 5, 4 and 3 respectively. The loads on the bus bars of A and B are 75 MW and 30 MW respectively. Determine the load taken by the set C and indicate the direction in which the energy is flowing. [16] 6. Two areas of a power system network are interconnected by a tie-line, whose ca- pacity is 250MW, operating at a power angle of 45 0 . If each area has a capacity of 2000 MW and the equal speed regulation of 3 Hz/Pu MW, determine the frequency of oscillation of the power for step change in load. Assume that both areas have the same inertia constants of H = 4 sec. If a step load change of 100MW occurs in one of the areas determine the change in tie-line power. [16] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0203/R05 Set No. 3 7. Explain the proportional plus integral control for load frequency control of a single area system. [16] 8. (a) A single-phase motor connected to a 230 V, 50 Hz supply takes 30 A at a p.f of 0.7 lag. A capacitor is shunted across the motor terminals to improve the p.f to 0.9 lag. Determine the capacitance of the capacitor to be shunted across the motor terminals. (b) Explain the specifications of load compensation. [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0203/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 POWER SYSTEM OPERATION AND CONTROL (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) What is an incremental fuel cost? How is it used in thermal plant operation? (b) Name the components of production cost and explain. [8+8] 2. Draw the flow chart for obtaining optimal scheduling of generating units by ne- glecting the transmission losses. [16] 3. In a two plant operation system, the hydro plant is operation for 10 hrs, during each day and the steam plant is to operate all over the day. The characteristics of the steam and hydro plants are C T = 0.04 P GT 2 +30 P GT + 10 Rs/hr WH =0.12 P GH 2 +30 PGH m 3 / sec When both plants are running, the power flow from steam plant to load is 150 MW and the total quantity of water is used for the hydro plant operation during 10 hrs is 150×10 6 m 3 . Determine the generation of hydro plant and cost of water used. Neglect the transmission losses. [16] 4. (a) Explain the necessity of maintaining a constant frequency in power system operation. (b) Two generators rated 100 MW and 400 MW are operating in parallel. The droop characteristics of their governors are 2% and 4% respectively from no load to full load. Assuming that the generators are operating at 50 Hz at noload, how would a load of 500 MW be shared between them? What will be the system frequency at this load? Assume free governor operation. [6+10] 5. Discuss in detail the dynamic response of the load frequency control of an isolated area for load frequency control. [16] 6. Two power stations A and B of capacities 75MW and 200MW respectively are operating in parallel and are interconnected by a short transmission line. The generators of stations A and B have speed regulations 4% and 2% respectively. Calculate the output of each station and the load on the interconnection, if, (a) The load on each station is 100MW (b) The loads on respective bus bars are 50MWand 150MW (c) The load is 130MW at station ‘A’ bus bar only. [6+5+5] 7. (a) Explain economic dispatch control problem in detail. (b) Explain how the frequency error in the load frequency control problem is reduced to zero. [8+8] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0203/R05 Set No. 4 8. A three phase transmission line has resistance and inductive reactance of 25 ohms and 90 ohms respectively. With no load at the receiving end a synchronous com- pensator there takes a current lagging by 90 0 , the voltage at the sending end is 145 kV and 132 kV at the receiving end. Calculate the value of the current taken by the compensator. When the load at the receiving end is 50 MW, it is found that the line can operate with unchanged voltages at sending and receiving ends, provided that the compensator takes the same current as before but now leading by 90 0 . Calculate the reactive power of the load. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0502/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 SOFTWARE PROJECT MANAGEMENT ( Common to Computer Science & Engineering and Information Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. How is size, process and personnel have an impact on software cost model? [16] 2. Describe the various dimensions of scheduling? How dimensions are helpful in improving software economics? [16] 3. Summarize the low level requirements that evolve for a relatively large project?[16] 4. Illustrate with figure the typical build sequence associated with a layered architec- ture. [16] 5. (a) Which milestone occurs at the end of the inception phase? Explain. (b) Write the default content of status assessment reviews. (c) Write the planning sequence of backward-looking. [4+8+4] 6. (a) Define meta process, macro process and micro process. (b) Discuss about the activities of software management team. (c) Explain CCB. [6+6+4] 7. Why do traceability metrics become difficult to manage when there are many system requirements? Design a requirements structuring mechanism, based on viewpoints, which might help reduce the scale of this problem. [16] 8. Explain the following: (a) Examples of the fundamental metrics classes (b) Priorities for tailoring the process framework (c) Process maturity (d) Evolution requirements. [4+4+4+4] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0502/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 SOFTWARE PROJECT MANAGEMENT ( Common to Computer Science & Engineering and Information Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. What are the attributes to have a good estimate of the software cost? [16] 2. Compare and contrast change management environment and round trip engineer- ing? [16] 3. Describe the various concerns of different stakeholders? [16] 4. What are the various artifacts associated with each work flow? [16] 5. (a) Identify the stakeholders for a tool allows the user to view changes to a single document in both MS word and WordPerfect simultaneously. Describe the payoff for such a tool. (b) What are the steps taken in for scheduling, immovable milestones? [8+8] 6. (a) Describe what might happen to a software project if the requirements phase did not apply sound engineering principles and practices and the remaining phases did effectively apply them. (b) What are the following standards promote: i. Highest organizational level ii. Intermediate line-of-business level iii. Lowest project level. [6+10] 7. Why do traceability metrics become difficult to manage when there are many system requirements? Design a requirements structuring mechanism, based on viewpoints, which might help reduce the scale of this problem. [16] 8. (a) Write 80/20 lessons of software. (b) Write Boehm’s top 10 software metrics. [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0502/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 SOFTWARE PROJECT MANAGEMENT ( Common to Computer Science & Engineering and Information Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. Give an overview of, how a return of investment profile can be achieved in subse- quent efforts across the life cycle of various domains? [16] 2. What are the architectural issues exposed through rigorous engineering activities? [16] 3. Describe the various concerns of different stakeholders? [16] 4. What is the typical build sequence associated with a layered approach explain?[16] 5. (a) Write different concerns of different stakeholders. (b) Discuss about the cost and schedule estimating process. [8+8] 6. What is automation? Briefly discuss about process automation tools and the project environment. [16] 7. (a) What are the metrics for small organizations? (b) What are the metrics for software quality? [8+8] 8. (a) Explain software size evolution of CCPDS-R. (b) “Only about 15% of software development effort is devoted to programming”. Discuss. (c) Explain builds sequence of CCPDS-R. [8+4+4] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0502/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 SOFTWARE PROJECT MANAGEMENT ( Common to Computer Science & Engineering and Information Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. How is environment, quality and personnel have an impact on software cost model? [16] 2. Discuss the cost and schedule investments necessary to achieve reusable compo- nents. [16] 3. Describe the evolution of planning fidelity in the WBS over the life cycle? [16] 4. State the primitive components of a software change order. [16] 5. (a) Develop “context-free-questions” that you might ask a stakeholder during in- ception. (b) Write default agendas for the life-cycle architecture milestone. [8+8] 6. (a) What are default roles in a software line-of-business organization? Explain. (b) What are the primitive components of a software change order? [10+6] 7. (a) Briefly discuss about management indicators. (b) Explain the scale of process discriminants. [10+6] 8. Discuss about Ada COCOMO. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0502/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 DATA WAREHOUSING AND DATA MINING (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. What is data mining? In your answer, address the following: (a) Is it another hype? (b) Is it a simple transformation of technology developed from databases, statis- tics, and machine learning? (c) Explain how the evolution of database technology led to data mining. (d) Describe the steps involved in data mining when viewed as a process of knowl- edge discovery? [16] 2. (a) Discuss about data transformation. (b) Briefly discuss the parametric and non- parametric methods of Numerosity reduction. [8+8] 3. Explain the syntax for the following data mining primitives: (a) Task-relevant data (b) The kind of knowledge to be mined (c) Interestingness measures (d) Presentation and visualization of discovered patterns. [16] 4. (a) How can class comparison descriptions be visualized? Explain. (b) Explain the measures of central tendency in detail. [8+8] 5. Explain the following: (a) Generating association rules from frequent item sets. (b) FP-tree (c) ARCS. [4+6+6] 6. (a) Can any ideas from association rule mining be applied to classification? Ex- plain. (b) Explain training Bayesian belief networks. (c) How does tree pruning work? What are some enhancements to basic decision tree induction? [6+5+5] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0502/R05 Set No. 1 7. What is clustering? Briefly describe the following approaches to clustering meth- ods: partitioning methods, hierarchical methods, density-based methods, grid- based methods, and model-based methods. Give an example in each case. [16] 8. (a) Explain spatial association analysis. (b) How can we study time-series data? Explain. (c) What is sequential pattern mining? Explain. (d) Explain text data analysis and information retrieval. [4+4+4+4] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0502/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 DATA WAREHOUSING AND DATA MINING (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Describe three challenges to data mining regarding data mining methodology and user interaction issues. (b) Explain Indexing OLAP data. [8+8] 2. Write short notes on the following data reduction techniques: (a) Dimensionality reduction (b) Data compression. [16] 3. Explain the syntax for the following data mining primitives: (a) Task-relevant data (b) The kind of knowledge to be mined (c) Interestingness measures (d) Presentation and visualization of discovered patterns. [16] 4. (a) What are the differences between concept description in large data bases and OLAP? (b) Explain about the graph displays of basic statistical class description. [8+8] 5. Sequential patterns can be mined in methods similar to the mining of association rules. Design an efficient algorithm to mine multilevel sequential patterns from a transaction database. An example of such a pattern is the following “A customer who buys a PC will buy Microsoft software within three months”, on which one may drill down to find a more refined version of the patterns, such as “A customer who buys a Pentium PC will buy Microsoft office within three months”. [16] 6. (a) Give the algorithm to generate a decision tree from the given training data. (b) Explain the concept of integrating data warehousing techniques and decision tree induction. (c) Describe multilayer feed-forward neural network. [8+4+4] 7. (a) Suppose that the data mining task is to cluster the following eight points(with (x,y) representing location) into three clusters. A1(2,10), A2(2,5), A3(8,4), B1(5,8), B2(7,5), B3(6,4), C1(1,2), C2(4,9). The distance function is Euclidean distance. Suppose initially we assign A1,B1, and C1 as the center of each cluster, respectively. Use the k-means algorithm to show only 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0502/R05 Set No. 2 i. the three cluster centers after the first round execution, and ii. the final three clusters. (b) Explain DBSCAN algorithm with suitable example. (c) How does CLIQUE work? [8+4+4] 8. (a) Explain the following: i. Generalization of structured data ii. Generalization of object identifiers and class/subclass hierarchies iii. Generalization of class composition hierarchies. (b) Explain mining multimedia databases. [3+3+3+7] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0502/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 DATA WAREHOUSING AND DATA MINING (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) What is data mining? What is data warehousing? Give their applications. (b) Briefly discuss data warehouse architecture. [8+8] 2. Briefly discuss the Discretization and concept hierarchy techniques. [16] 3. (a) What are the desired architectures for Data mining systems. (b) Briefly explain about concept hierarchies. [8+8] 4. Write short notes for the following in detail: (a) Attribute-oriented induction. (b) Efficient implementation of Attribute-oriented induction. [8+8] 5. When mining cross-level association rule, suppose it is found that the item set “IBM desktop computer, printer” does not satisfy minimum support. Can this informa- tion be used to prune the mining of a “descendent ” item set such as “IBM desktop computer, b/w printer”? Give a general rule explaining how this information may be used for pruning the search space. [16] 6. (a) Given a decision tree, you have the option of (i) converting the decision tree to rules and then pruning the resulting rules, or (ii) pruning the decision tree and then converting the pruned tree to rules. What advantages does former option have over later one. Explain. (b) Can any ideas from association rule mining be applied to classification? Ex- plain. [8+8] 7. Why is outlier mining important? Briefly describe the different approaches behind statistical-based outlier detection, distance-based outlier detection, and deviation- based outlier detection. [16] 8. (a) What is information retrieval? What methods are there for information re- trieval? (b) What is sequential pattern mining? Explain. (c) Discuss about mining the webs link structures to identify authoritative web pages. [4+6+6] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0502/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 DATA WAREHOUSING AND DATA MINING (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Discuss the major issues in data mining regarding mining methodology and user interaction. (b) Briefly discuss the methods for the efficient implementation of data warehouse systems. [8+8] 2. Explain various data reduction techniques. [16] 3. (a) Briefly discuss the four major types of concept hierarchies. (b) Briefly discuss about the objective measures of pattern interestingness. [8+8] 4. Explain the following terms in detail. (a) Information gain. (b) Variance and Standard deviation. (c) Mean, median, and mode. (d) Quartiles, outliers, and boxplots. [16] 5. (a) Write the FP-growth algorithm. Explain. (b) What is an iceberg query? Explain with example. [10+6] 6. (a) Write an algorithm for k-nearest neighbor classification given k and n, the number of attributes describing each sample. (b) What is linear regression? Give an example of linear regression using the method of least squares. [8+8] 7. (a) Given two objects represented by the tuples (22,1,42,10) and (20,0,36,8): i. Compute the Euclidean distance between the two objects. ii. Compute the Manhanttan distance between the two objects. iii. Compute the Minkowski distance between the two objects, using q=3. (b) Explain about Statistical-based outlier detection and Deviation-based outlier detection. [3+3+4+3+3] 8. (a) Explain spatial data cube construction and spatial OLAP. (b) Discuss about mining text databases. [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech.I Semester Supplementary Examinations, November, 2011 ADVANCED CONTROL SYSTEMS (Electrical and Electronics Engineering) Time: 3 Hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ******* 1. a) Explain the concept of the following i)State ii) State variables, iii) State vector and iii) State model b) Construct the state model for the system characterized by the following differential equation 3 5 2 u u y y y + = + + Also develop the block diagram 2. Convert the following state model into the Jordan canonical form and there from comment on controllability and observability ( ) ( ) t u t x t x ( ( ( ¸ ( ¸ − + ( ( ( ¸ ( ¸ − − − = 1 1 0 1 0 1 ) ( 3 4 2 1 0 0 0 1 0 ( ) ( ) t x t y ( ¸ ( ¸ − = 1 1 2 1 1 0 3. The block diagram of a system with saturation nonlinearity is shown in figure. Investigate the stability of the system by describing function method. 4. a) Explain the procedure to draw phase trajectory by delta method b) Discuss the need of phase – plane analysis Code No: M0204 Set No.1 R05 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 5. A linear autonomous system is described by the state equation Ax x = Where ( ¸ ( ¸ − − = k k k k A 6 2 4 4 Find the restrictions on the parameter ‘k’ to guarantee stability of the system 6. A single input system is described by the following state equation [ ] [ ] [ ] u x x ( ( ( ¸ ( ¸ + ( ( ( ¸ ( ¸ − − − = 0 1 10 3 1 0 0 2 1 0 0 1 Design a state feedback controller which will give closed loop poles at 6 , 2 1 − ± − j 7. Find the extremal for the following functional dt x t x x J ) 2 1 0 2 1 2 ( ) ( ∫ + = 1 , 2 ) ( , 2 ) 1 ( 1 1 > = = t t x x 8. Explain the following for optimal control system design a) Minimum-Time problem b) State regular problem c) Infinite – time state regulator problem Code No: M0204 Set No.1 R05 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech.I Semester Supplementary Examinations, November, 2011 ADVANCED CONTROL SYSTEMS (Electrical and Electronics Engineering) Time: 3 Hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ******* 1. A feedback system has a closed loop transfer function ( ) ( ) ) 6 )( 2 ( ) 3 ( 5 + + + = s s s s s R s C Construct three different state models for this system and give block diagram representation for each state model 2. a)What can we say about controllability and observability without making any further calculations? b) Consider the system given by ( ) ( ) 2 3 3 2 + + + = s s s s U s Y Obtain state space representations in the controllable canonical form, observable canonical form and diagonal canonical form 3. The block diagram of a system with hysteresis is shown in below figure. Using describing function method, determine whether limit cycle exists in the system. If limit cycles exists then, determine their amplitude and frequency. 4. a) Describe the basic concept of phase-plane method b) Explain the construction of phase trajectories Code No: M0204 Set No.2 R05 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 5. Consider the system shown in below figure. Determine the restrictions which must be placed on the non-linear function φ ) (⋅ in order for the system state with r(t)=0 to be asymptotically stable in the large. Use lypunov’s direct method 6. Consider a linear system described by the transfer function ) 2 ( ) 1 ( 10 ) ( ) ( + + = s s s s U s Y Design a feedback controller with a state feedback so that the eigen values of the closed loop system are at 1 1 , 2 j ± − − 7. For the system , 1 , ≤ = u with u x find the control which drive the system from an arbitrary initial state to the origin and minimize 1 , 1 0 ) ( t dt t t u J ∫ = is frees 8. a) State and explain the minimum time problems describe its performance index b) Let . 1 ) ( ) ( 2 2 2 1 2 1 − + = − = x x x g and x x x f What are the potential candidates for minima of ‘f’ subject to the constraint g = 0. Show that the points | ¹ | \ | 2 1 , 2 1 and | ¹ | \ | − − 2 1 , 2 1 actually provide the minima. Code No: M0204 Set No.2 R05 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech. I Semester Supplementary Examinations, November, 2011 ADVANCED CONTROL SYSTEMS (Electrical and Electronics Engineering) Time: 3 Hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ******* 1. A linear time invariant system is described by the following state model u x x x x x x ( ( ( ¸ ( ¸ + ( ( ( ¸ ( ¸ ( ( ( ¸ ( ¸ − − − = ( ( ( ¸ ( ¸ 2 0 0 6 11 6 1 0 0 0 1 0 3 2 1 3 2 1 Transform this state model into a canonical state model and there from obtain the explicit solution for the state vector and output when the control force ‘u’ is a unit step function and initial state vector is [ ] 1 1 0 0 = T x 2. Consider a system described by the state equation ( ) ( ) ( ) ( ) t u B t x t A t x + = ( ) ( ¸ ( ¸ = ( ¸ ( ¸ − = − 1 0 , 1 0 1 B e t A where t Is this system controllable at t = 0? If yes, find the minimum energy control to drive it from ( ) 1 1 1 0 0 = ( ¸ ( ¸ = ′ = t at x to x 3. Illustrate the behavior of the following non-linear systems a) Frequency-amplitude dependence b) Jump resonance 4. A linear second- order servo is described by the equation 0 2 2 = + + e n e n e ω ω ξ Where ξ =0.15, n ω = 1, e(0) =1.5, 0 ) 0 ( = e Determine the singular points. Construct the phase trajectory using the method of isoclines Code No: M0204 Set No.3 R05 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 5. Prove the linear system Ax x = is globally asymptotically state at the origin if and only if for any given symmetric positive definite matrix Q, there exists a symmetrix definite matrix ‘P’ that satisfies the matrix equation Q PA P A T − = + 6. Given the system Bu Ax x + = Where A= ( ( ( ¸ ( ¸ = ( ( ( ¸ ( ¸ = 1 1 0 1 0 1 , 3 0 0 0 2 0 0 0 1 B A Design a liner state variable feedback such that the closed loop poles are located at - 1,-2 and -3 7. Derive the Euler Lagrange equation and the boundary conclusion for the final time 1 t free and ) ( 1 t x specified, starting from a given ) ( 0 t x extremize ∫ = 1 1 ) , , ( ) ( t dt t x x g x J 8. a) What are the steps involved in solution of an optimal control problem b) Explain the minimum-fuel problem in the design of an optimal controller Code No: M0204 Set No.3 R05 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech. I Semester Supplementary Examinations, November, 2011 ADVANCED CONTROL SYSTEMS (Electrical and Electronics Engineering) Time: 3 Hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ******* 1. A linear time invariant system is characterized by the homogeneous state equation ( ¸ ( ¸ ( ¸ ( ¸ = ( ¸ ( ¸ 2 1 2 1 1 2 0 1 x x x x a) Compute the solution of homogeneous equation, assuming the initial state vector ( ¸ ( ¸ = 1 0 0 x b) Consider now that the system has a forcing function and is represented by the following non-homogeneous state equation , 0 1 1 1 0 1 2 1 2 1 u x x x x ( ¸ ( ¸ + ( ¸ ( ¸ ( ¸ ( ¸ − = ( ¸ ( ¸ Where u is a unit step function . Compute the solution of this equation assuming initial conditions of part(a) 2. A linear time invariant system is described by the following state model. Obtain the canonical form of the state model. [ ] [ ] ( ( ( ¸ ( ¸ = ( ( ( ¸ ( ¸ − + ( ( ( ¸ ( ¸ ( ( ( ¸ ( ¸ − − − = ( ( ( ¸ ( ¸ 3 2 1 3 2 1 3 2 1 0 1 1 1 1 2 4 0 0 0 2 0 0 0 1 x x x y and u x x x x x x 3. a) Derive the expression for describing functions b) How the non-linearities are classified and mansion the examples for each Code No: M0204 Set No.4 R05 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 4. Consider a system with an ideal relay as shown in below figure. Determine the singular point. Construct phase trajectories, corresponding to initial conditions, 1 ) 0 ( , 2 ) 0 ( = = c c . Take r = 2 volts and M = 1.2 volts 5. For the system [ ] [ ] x x ( ¸ ( ¸ − − = 3 2 1 0 .Find a suitable lyapunov function V(x). Find an upper bound on time that it takes the system to get from the initial condition ( ¸ ( ¸ = 1 1 ) 0 ( x to within the area defend by 1 . 0 2 2 2 1 = + x x 6. Consider the system defined by Bu Ax x + = ( ( ( ¸ ( ¸ = ( ( ( ¸ ( ¸ − − − = 1 1 0 , 6 5 1 1 0 0 0 1 0 B A where By using the state –feedback control u = -Kx, it is desired to have the closed –loop poles at s = -2±j4, s = -10. Determine the state –feedback gain matrix K. 7. Find the externals of the functional ( ) ( ) dt x x x x x J 2 1 2 2 4 / 0 2 1 + + = ∫ π the boundary conditions are ( ) ( ) 1 4 , 0 0 , 1 4 , 0 0 2 2 1 1 − = | ¹ | \ | = = | ¹ | \ | = π π x x x x 8. a) What are the factors required to design of an optimal controller b) Discuss the state regulator problem in the design of optimal controller Code No: M0204 Set No.4 R05 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0503/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 ADVANCED COMPUTER ARCHITECTURE (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. How many levels of program are present in order to evaluate the performance? Explain in detail. [16] 2. Explain various addressing modes in computer architecture. [16] 3. Explain data dependent hazard with example? [16] 4. What are the three capabilities that are required to speculate ambitiously? Explain in detail? [16] 5. Explain the following terms associated with cache design: (a) Factors affecting cache hit ratios. (b) Cache flushing policies. (c) Cacheable Vs non-cacheable data. [5+6+5] 6. Explain about: (a) Sequential consistency (b) Relaxed Consistency. [8+8] 7. (a) What is the average time to read or write a 512 bytes sector for a disk? The advertised average seek time is 5ms, the transfer rate is 40MB/sec, it rotates at 10,000RPM, and the controller overhead is 0.1ms. Assume the disk is idle so that there is no queuing delay. In addition, calculate the time assuming the advertised seek time is 3 times longer than the measured seek time. (b) Write about i. Optical Disk ii. Magnetic Tapes. [8+8] 8. (a) Define effective bandwidth and derive a formula for it. (b) Plot the effective bandwidth versus message size for overheads of 25 and 250 ms and for network banwidths of 100,1000 and 10,000 bits/sec. Vary message size from 16bytes to 4MB. For what message sizes is the effective bandwidth virtually the same as the raw network bandwidth? If overhead is 250ms, for what message sizes is the effective bandwidth always less than 100M bits/sec? [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0503/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 ADVANCED COMPUTER ARCHITECTURE (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Explain Amdhal‘s law? (b) Find the number of dies for 30 cm wafer for a die that is 0.7cm on a side.[8+8] 2. (a) Define little endian format. (b) Discuss in detail about the instructions used for flow control. [4+12] 3. What are the limitations of simple pipelining? Discuss the solutions for the same. [16] 4. Explain pipeline scheduling in detail. [16] 5. Explain the techniques in increasing memory bandwidth. [16] 6. (a) What is the difficulty of spin lock implementation? How can it be eliminated? (b) Explain how to reduce the contention is barrier implementation. (c) What is meant by queuing lock? [6+6+4] 7. (a) Give the applications of the interrupt driven IO. (b) Write about the bit interleaved parity. Give an example comparing RAID 3 and RAID 4/5 on small write updates. [8+8] 8. (a) Write short notes on: i. Fibre optic Components ii. Fibre Optic Cables iii. Wavelength division multiplexing. (b) Briefly Write about the performance parameters of interconnection networks. [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0503/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 ADVANCED COMPUTER ARCHITECTURE (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. Write short notes on (a) learning curves. (b) Amdhal‘s law. [8+8] 2. With a neat diagram explain the structure of recent compilers. [16] 3. Write notes on finite registers. [16] 4. What are the three capabilities that are required to speculate ambitiously? Explain in detail? [16] 5. (a) What are fully associative caches? Explain how they are used in calculating capacity misses? (b) Define pseudoset .How does the pseudoassociative cache works. [8+8] 6. (a) Give the reasons why cache coherence is an accepted requirement in small scale multiprocessors? (b) Draw the state transition diagram for an individual cache block in a directory based system. [8+8] 7. (a) Give the characteristic of common desktop IO buses. (b) Write about the bus design decision. [8+8] 8. What is a cluster? Explain about the designing of a cluster with an example. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0503/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 ADVANCED COMPUTER ARCHITECTURE (Computer Science & Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. What are the four implementation technologies that a computer designer must beaware of? Explain? [16] 2. List out different operator types and explain each with example. [16] 3. Write notes on Hardware based speculation. [16] 4. What are the approaches to preserve exception behavior? Discuss. [16] 5. (a) Write about cache and performance. (b) Calculate the cpu execution time for a computer with clock cycles per instruc- tion as 1.0 when all memory accesses hit in the cache.The only data accesses or loads and stores, and these total 50% of the instructions. If the miss penalty is 25 clock cycles and the miss rate is 2%,how much faster would the computer be if all instructions were cache hits? [8+8] 6. (a) Write about the hardware primitives for synchronization. (b) Explain about spin locks with an examples. [8+8] 7. (a) What is the average time to read or write a 512 bytes sector for a disk? The advertised average seek time is 5ms, the transfer rate is 40MB/sec, it rotates at 10,000RPM, and the controller overhead is 0.1ms. Assume the disk is idle so that there is no queuing delay. In addition, calculate the time assuming the advertised seek time is 3 times longer than the measured seek time. (b) Write about i. Optical Disk ii. Magnetic Tapes. [8+8] 8. Write about (a) Ethernet (b) ATM. [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0401/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 ELECTRONIC MEASUREMENTS AND INSTRUMENTATION (Electronics & Communication Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Explain the principal of operation of successive approximation type DVM. (b) Explain about the measurement of period with neat diagram. [8+8] 2. (a) Distinguish the principle of operation of function generator and signal gener- ator. (b) Explain how a triangular wave form is generated in function generator instru- ment. [8+8] 3. (a) With a neat diagram explain the working of a capacitance - voltage analyzer. (b) What are the advantages and disadvantages of a spectrum analyzer? [10+6] 4. (a) Compare the output voltage of the voltage divider attenuator (Compensated Attenuator) for a dc voltage and a 10 MHz ac signal. (b) Write short notes on delay line construction techniques. (c) How do we measure voltage and time using CRO? [7+5+4] 5. (a) Explain the operation of 10 to 1 probe. (b) A given oscilloscope has an input resistance of 10 M ohm shunted by 20 pf. Design a 10 to 1 probe. [8+8] 6. (a) Draw the Circuit of a basic Q-meter and explain its principle of operation using a vector diagram. (b) With circuit diagrams, explain the working of any two bridges that are em- ployed for measurements at radio frequencies. [8+8] 7. (a) Explain the most common method of temperature compensation used in strain gauges. (b) Explain the working of a magnetic flowmeter with a neat diagram. [8+8] 8. What is meant by SCADA? Briefly explain the construction and operations of DAS? [16] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0401/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 ELECTRONIC MEASUREMENTS AND INSTRUMENTATION (Electronics & Communication Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) With a neat block diagram, explain the microprocessor based ramp type Dig- ital voltmeter. (b) Explain with a neat circuit diagram of a RMS voltmeter. [8+8] 2. (a) With respect to construction and circuit configuration, explain how a square wave generator differs from sine wave generator. (b) With a neat block diagram discuss about an AF sine wave generator. [8+8] 3. (a) Draw and discuss the spectral displays of various modulations using Spectrum analyzer. (b) Explain one application of distortion factor meter. [8+8] 4. (a) Discuss the relationship between the bandwidth and rise time in CRO. (b) An input pulse V i of 5 ns duration is applied to the basic sweep circuit using R and C at the instant V o reaches to 4.76V. What is the voltage across the capacitor after 50 µs if the saturated transistor presents a resistance of 0.2KΩ to the circuit? (c) A trigger pulse is applied to the basic sweep using R and C for every 10 ms. Compute the amplitude of the voltage, V 0 , across the capacitor when the trigger pulse is applied. The values of V cc = 50 V, R = 500 KΩ, C = 0.2 µF. [6+5+5] 5. (a) Draw the block diagram of dual-trace CRO and explain the same. (b) Name the various types of probes with their applications. [8+8] 6. (a) Explain the “parallel-connection” method of using Q-meter and Obtain the expressions for resistance, reactance and Q factor. (b) Give the list of the detectors used in ac bridges. [10+6] 7. What are the different parameters involved in the study of inductive transducers? Briefly explain any two of them? [16] 8. (a) How strain gauge load cell is used for the measurement of force? (b) What are the advantages and limitations of a strain gauge load cell? [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0401/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 ELECTRONIC MEASUREMENTS AND INSTRUMENTATION (Electronics & Communication Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) List out some important features like, operating and performance character- istics of digital voltmeters. (b) With the help of a neat block diagram explain the principle of operation of a ramp type digital voltmeter. List out its advantages and disadvantages. [8+8] 2. (a) With a neat block diagram, explain about the working of AF square wave generator. (b) Explain how a square wave generator differs from AF sine wave generator. [8+8] 3. (a) What is the difference between a wave analyzer and harmonic distortion ana- lyzer? (b) Explain with the help of block diagram the working of a harmonic distortion analyzer? [8+8] 4. (a) Explain in detail the sweep generator in the following cases: i. Basic RC charging circuit. ii. UJT relaxation oscillator. (b) Explain the working of a compensated “10X probe”. [8+8] 5. (a) A high impedance probe with 9 M ohm resistance and 4 pf capacitance is connected to an oscilloscope with an input resistance of 1 M ohm. When the probe was connected, the effective capacitance is decreased to 3.6 pf. Find i. the capacitance of the oscilloscope ii. the attenuation of the probe. (b) write the differences between digital storage oscilloscope and conventional stor- age oscilloscope. [8+8] 6. (a) Draw the circuit of a Hay bridge and derive an expression for the unknown inductance and show that it is preferred for the measurement of high Q coils. (b) What are the sources of error in the measurement of Q of a coil. How are they taken care? [8+8] 7. (a) Describe the essential difference between a variable reluctance type of trans- ducer and a LVDT. (b) Explain the working of a turbine flowmeter with a neat diagram. [8+8] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0401/R05 Set No. 3 8. (a) Explain briefly the construction and working of the Hydraulic Force Meter and also explain its applications in various measurements? (b) Find the cause that produces the resistance or obstruction to a 10kg body, moving with an acceleration of 10kg/m 2 . Name the cause and find the value of that cause? [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0401/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 ELECTRONIC MEASUREMENTS AND INSTRUMENTATION (Electronics & Communication Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Define dynamic error and show how it differs from the type of input signal applied to the system. (b) Explain the term fidelity of an instrument and show how it is expressed. [8+8] 2. (a) With a block diagram explain the operation of AF sine - square wave oscillator. (b) Explain the different front panel controls of a signal generator. Give the specifications with typical values. [8+8] 3. (a) Write short notes on i. Logic probe ii. Logic clip. (b) Explain a logic analyzer and its uses in locating faults in computer buses. [8+8] 4. (a) Explain with a block diagram the major parts of CRT. (b) Explain the difference between the internal & external graticules. [8+8] 5. (a) A high impedance probe with 9 M ohm resistance and 4 pf capacitance is connected to an oscilloscope with an input resistance of 1 M ohm. When the probe was connected, the effective capacitance is decreased to 3.6 pf. Find i. the capacitance of the oscilloscope ii. the attenuation of the probe. (b) write the differences between digital storage oscilloscope and conventional stor- age oscilloscope. [8+8] 6. (a) Find the series inductance, resistance and Q of an inductive element using Maxwell bridge .Given Z1=parallel combination of a resistor of value 470 Ω and a capacitor of value 0.5 µF, Z2=Z3=2KΩ. The bridge is driven by a 3 KHz sinusoidal source. (b) Explain the principle and working of Q meter? [8+8] 7. (a) What parameters should be considered in selecting a transducer? (b) Define active transducer and passive transducer? Give the examples for each? [8+8] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: M0401/R05 Set No. 4 8. Briefly explain the working principle of tactometer generator and how shaft speed is measured by using tactometer generators? [16] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0503/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 ARTIFICIAL INTELLIGENCE ( Common to Computer Science & Engineering and Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Explain Goal formulation and problem formulation. (b) Explain how a problem can be defined. [6+10] 2. What is breadth first search of the search tree? Write an algorithm to conduct breadth first search explain with example and also mention advantages and disad- vantages. [16] 3. (a) What is a cryptarithmetic puzzle. (b) Solve the following cryptarithmetic problem: [4+12] C R O S S R O A D S D A N G E R 4. In a chess game assume the average branching factor is 35, and the number of moves made by each player to win or failure is 50. Estimate size of game tree, with diagram. What is your conclusion from above game? [16] 5. (a) Explain, the knowledge level, logical level, and implementation level in a knowledge-based agent. (b) What is a horn sentence. Does a polynomial time inference procedure exist for Horn sentence? (c) What ontological and epistemological commitments are made by propositional logic. [6+6+4] 6. Consider the following facts: • Marcus was a man • Marcus was a Pompeian • Marcus was born in 40 A.D. • All men are mortal • All Pompeians died when volcano erupted in 79 A.D. • No mortal lives longer than 150 years • It is now 1991 • Alive means not dead • If someone dies, then he is dead at all later times Prove using backward chaining that Marcus is dead. [16] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0503/R05 Set No. 1 7. Let us consider a version of the milk/banana/drill shopping problem (a) Let CC denote a credit card that the agent can use to buy any object. Write the description of Buy so that the agent has to have its credit card in order to buy any thing. (b) Write a Pick-Up operator that enables the agent to have an object if it is portable and at the same location as the agent. (c) Assume that the credit card is at home, but Have(CC) is initially false. Con- struct a partially ordered plan that achieves the goal, showing both ordering constraints and causal links (d) Explain in detail what happens during the planning process when the agent explores a partial plan in which it leaves home without the card. [4+4+4+4] 8. Explain instance based learning with an example. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0503/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 ARTIFICIAL INTELLIGENCE ( Common to Computer Science & Engineering and Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. How to specify a task environment? Write PEAS descriptions for any three agent types. [16] 2. How best first search combines the advantages of breadth first search and depth first search? Explain with examples and diagrams. [16] 3. (a) What is a constraint satisfaction problem? (b) Solve the following cryptarithmetic problem: [4+12] S E N D M O R E M O N E Y 4. Explain the following with respect to minimax procedure. (a) Static evaluation function. (b) Maximizing ply, Maximizing player (c) Manimizing ply, Manimizing player (d) Minimax procedure. [3+3+3+7] 5. (a) Show that the following sentences are inconsistent using propositional logic i. If Jack misses many classes through illness, then he fails high school ii. If Jack fails high school, then he is uneducated iii. If Jack reads a lot of books, then he is not uneducated iv. Jack misses many classes through illness and reads a lot of books (b) Some agents make inferences as soon as they are told a new sentence, while other wait until they are asked before they do any inferencing. What difference does this make at the knowledge level, the logical level, and the implementation level. [10+6] 6. (a) Here are two sentences in the language of first-order logic: i. –V x ∋y (x>=y) ii. ∋y –Vx (x>=y) Assume that the variable range over all natural numbers 0, 1, 2, . , and that the ”>=” predicate means ”greater than or equal to”. Try to prove that (i) follows from (ii) using resolution; continue until the proof breaks down and you cannot proceed. Show the unifying substitution for each resolution step. If the proof fails, explain exactly where, how, and why it breaks down 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0503/R05 Set No. 2 (b) Now try to prove that (ii) follows from (i) [8+8] 7. (a) Give an outline of a simple planning agent (b) Give partial-order planning algorithm. [8+8] 8. What are decision trees? Draw a decision tree for the problem of deciding whether or not to move forward at a road intersection given that the light has just turned green. [16] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0503/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 ARTIFICIAL INTELLIGENCE ( Common to Computer Science & Engineering and Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. What is AI? Explain any four approaches to AI. [16] 2. (a) Compare Generate and test algorithm and Hill climbing. (b) Compare simple hill climbing and steepest ascent hill climbing. [8+8] 3. Solve the following cryptarithmetic problem by hand, using backtracking, forward checking and the MRV and least constraining value heuristics. [16] T W O + T W O F O U R 4. Explain how to make optimal decisions in a multiplayer programs. [16] 5. (a) Show that the following sentences are inconsistent using propositional logic i. If Jack misses many classes through illness, then he fails high school ii. If Jack fails high school, then he is uneducated iii. If Jack reads a lot of books, then he is not uneducated iv. Jack misses many classes through illness and reads a lot of books (b) Some agents make inferences as soon as they are told a new sentence, while other wait until they are asked before they do any inferencing. What difference does this make at the knowledge level, the logical level, and the implementation level. [10+6] 6. Consider the following sentences: • John likes all kinds of food • Apples are food • Chicken is food • Anything anyone eats and isn’t killed by is food • Bill eats peanuts and is still alive • Sue eats everything Bill eats (a) Translate these sentences into formulas in predicate logic (b) Prove that John likes peanuts using backward chaining. [6+10] 7. (a) Explain planning with state space search (b) Explain with example heuristic state space search. [8+8] 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0503/R05 Set No. 3 8. (a) How can the performance of the learning algorithm be assessed (b) Give some practical uses of decision tree learning (c) What is the task of pure inductive inference? [6+6+4] ⋆ ⋆ ⋆ ⋆ ⋆ 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0503/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 ARTIFICIAL INTELLIGENCE ( Common to Computer Science & Engineering and Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. (a) Write about problem formulation and goal formulation. (b) Explain 8-queens problem. [8+8] 2. How best first search combines the advantages of breadth first search and depth first search? Explain with examples and diagrams. [16] 3. What are the various problem that occur during hill climbing? How to solve them. [16] 4. “Minimax procedure is a depth first, depth limited Recursive Procedure” Explain this fact by using your own example and diagram. [16] 5. (a) Show that the following sentences are inconsistent using propositional logic i. If Jack misses many classes through illness, then he fails high school ii. If Jack fails high school, then he is uneducated iii. If Jack reads a lot of books, then he is not uneducated iv. Jack misses many classes through illness and reads a lot of books (b) Some agents make inferences as soon as they are told a new sentence, while other wait until they are asked before they do any inferencing. What difference does this make at the knowledge level, the logical level, and the implementation level. [10+6] 6. (a) What do you mean by semidecidability? What is semidecidable in first-order logic? (b) Comment of completeness of first-order logic (c) What do you mean by conjunctive normal form and implicative normal form. [6+6+4] 7. Explain partial-order planning with example. [16] 8. (a) Give the general model of learning agents (b) Explain inductive learning. [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech. I Semester Supplementary Examinations, November, 2011 NEURAL NETWORKS AND FUZZY LOGIC (Common to Electrical & Electronics Engineering, Electronics & Control Engineering, Aeronautical Engineering and Instrumentation & Control Engineering) Time: 3 Hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ******* 1. a) Explain in detail about Mc-Culloh Pitts model. b) Describe about the characteristics of artificial neural networks. [8+8] 2. a) Describe in detail about types of neuron activation functions. b) Explain in detail about activation and synaptic neural dynamics. [8+8] 3. a) Explain about multi-category feed forward neural networks in detail. b) Elucidate discrete and continuous perceptron training algorithms in detail. [8+8] 4. a) Discuss in detail about the architecture and algorithm of back propagation network. b) Explain about Kolmogorov Theroem in detail. [8+8] 5. a) Explain in detail about Content-addressable memory and matrix memories. b) Describe in detail about BAM energy function. [8+8] 6. a) Discuss in detail about basic fuzzy set operations.Illustrate with examples. b) Consider a set P={P 1 , P 2 , P 3 , P 4 } of four variables of paddy plants ,set D={D 1 , D 2 , D 3 , D 4 } of various diseases affecting the plants and S={S 1 , S 2 , S 3 , S 4 } be the common symptom of diseases. Let ܴ ෩ be the relation on P X D and ܵ ሚ be the relation on D X S.                                 = 2 . 0 8 . 0 1 9 . 0 9 . 0 5 . 0 0 0 6 . 0 4 . 0 1 1 9 . 0 7 . 0 2 . 0 1 . 0 = S ~ 2 . 0 1 . 0 8 . 0 9 . 0 8 . 0 4 . 0 3 . 0 9 . 0 8 . 0 9 . 0 2 . 0 1 . 0 8 . 0 9 . 0 6 . 0 6 . 0 ~ and R Obtain the association of plants with the different symptoms of the diseases using max-min composition. [8+8] Code No: N0201 Set No.1 R05 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 7. a) Describe in detail about fuzzy inference and also give inferring procedures. b) Write about Fuzzy synthesis evaluation and Fuzzy ordering. [8+8] 8. a) Explain the application of fuzzy logic used in temperature controller of oven. b) What are the limitations of specialized on-line learning control architecture? [8+8] Code No: N0201 Set No.1 R05 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech. I Semester Supplementary Examinations, November, 2011 NEURAL NETWORKS AND FUZZY LOGIC (Common to Electrical & Electronics Engineering, Electronics & Control Engineering, Aeronautical Engineering and Instrumentation & Control Engineering) Time: 3 Hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ******* 1. a) Discus about the historical developments of neural networks. b) Describe about i) Mc-Culloh Pitts model ii) Hodgkin-Huxley neuron model. [8+8] 2. a) Explain about the model of artificial neuron and also discuss about operations of artificial neuron. b) Discuss in detail about the taxonomy of Artificial neural networks. [8+8] 3. a) Explain in detail about linear and nonlinear seperable classes in perceptron classification. b) Explain why perceptron network would not solve even the Ex-OR problem. [8+8] 4. a) Explain in detail about learning difficulties and improvements of multilayer feed forward neural networks. b) Discuss about the generalized delta rule in detail. [8+8] 5. a) Discuss paradigms of associative memory in detail. b) Explain in detail about architectures of discrete and continuous versions of Hopfield networks. [8+8] 6. a) Explain in detail about operation and relations on fuzzy sets. [8+8] b) What are the parameters to be considered for the design of membership function? Code No: N0201 Set No.2 R05 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 7. a) Explain with example MOM method for defuzzification. b) Let ܪ ෪ = High, ܸܪ ෪ = very high, ܵ ෩ = slow and ܳܵ ෪ (Quite slow) indicate, the associated fuzzy sets as follows. [8+8] For X={30,40,50,60,70,80,90,100}, the set of temperatures and Y={10,20,30,40,50,60}, the set of rotations per minute. ܪ ෪ =(70, 1) (80, 1) (90, 0.3) } ܸܪ ෫ ˜ = {(90, 0.9) (100, 1)} ܳܵ ෪ = {(10, 1) (20, 0.8)} ܵ ෩ = {(30, 0.8) (40, 1) (50, 0.6)} Apply the fuzz Modus ponens rule to deduce Rotation is quite slow given. i. If the temperature is high then rotation is slow. ii. The temperature is very high. 8. a) Explain how ANN is used for process Identification. b) Describe the application of fuzzy logic in automobile cruise control. [8+8] Code No: N0201 Set No.2 R05 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech. I Semester Supplementary Examinations, November, 2011 NEURAL NETWORKS AND FUZZY LOGIC (Common to Electrical & Electronics Engineering, Electronics & Control Engineering, Aeronautical Engineering and Instrumentation & Control Engineering) Time: 3 Hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ******* 1. a) Explain about spiking neuron model and Hodgkin-Huxley neuron model. b) Describe in detail about biological and artificial neuron models. [8+8] 2. a) Describe in detail about Rosenblatt’s perceptron model. b) Discuss in detail about the learning strategies. [8+8] 3. a) Give applications of single layer feed forward neural networks. b) Discuss in detail about single layer continuous perceptron networks for linearly separable classifications. [8+8] 4. a) Give derivation for back propagation training algorithm. b) Discuss in detail about credit assignment problem. [8+8] 5. a) Explain in detail about the storage and recall algorithms of Hopfield networks. b) Explain why linear associative network provides no means of suppression of cross talk noise. [8+8] 6. a) Discuss about max-min composition operation on relations with an example. b) Consider the fuzzy sets ܣ ሚ and ܤ ෨ defined on the interval X=[0,5] of real numbers,by the membership grade function µ A (x)= 1 + x x , µ B (x)= 2 -x Determine the mathematical formulae and graphs of the member ship grade functions of each of the following sets [8+8] i) A U B ii) (A ∩ B) c Code No: N0201 Set No.3 R05 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 7. a) Let X={a,b,c,d} Y={1,2,3,4} And ܣ ሚ ={ (a,0)(b,0.8)(c,0.6)(d,1)} ܤ ෨ = {(1,0.2)(2,1)(3,0.8)(4,0)} ܥ ሚ ={(1,0)(2,0.4)(3,1)(4,0.8)} Determine the implication relations i) IF x is ܣ ሚ THEN y is ܤ ෨ ii) IF x is ܣ ሚ THEN y is ܤ ෨ ELSE y is ܥ ሚ . b) Discuss in detail about development of rule based and decision making system. [8+8] 8. a) Design and develop a pressure process control by FLC model. Formulate necessary membership functions and required fuzzy rules for the application. b) Discuss about application of neural networks in load forecasting. [8+8] Code No: N0201 Set No.3 R05 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D IV B.Tech. I Semester Supplementary Examinations, November, 2011 NEURAL NETWORKS AND FUZZY LOGIC (Common to Electrical & Electronics Engineering, Electronics & Control Engineering, Aeronautical Engineering and Instrumentation & Control Engineering) Time: 3 Hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ******* 1. a) Explain in detail about the organization of human brain. b) Discuss in detail about integrate and fire neuron model. [8+8] 2. a) Explain in detail about artificial neural networks architectures. b) Discuss about different learning rules in detail. [8+8] 3. a) What is perceptron? Discuss about the Perceptron model in detail. b) Describe about Perceptron Convergence theorem in detail. [8+8] 4. a) Explain the modifications suggested to back propagation network. b) Explain in detail how to decide the number of hidden layer neurons, input layer neurons and output layer neurons in back propagation network. [8+8] 5. a) Give proof of BAM stability theorem. b) Explain in detail about instance/memory based learning algorithms. [8+8] 6. a) Let R,S be defined on the sets {1, 3, 5} × {1,3,5}. Let R: {(x, y)/y = x + 2}, S : {(x, y)/x < y}/. Using max min composition find i). RoS ii). SoR. b) Consider the fuzzy sets ܣ ሚ and ܤ ෨ defined on the interval X=[0,5] of real numbers,by the membership grade function µ A (x)= 1 + x x , µ B (x)= 2 -x Determine the mathematical formulae and graphs of the member ship grade functions of each of the following sets i) A c , B c ii) (A U B) c Code No: N0201 Set No.4 R05 1 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D 7. a) Explain about fuzzy rule based system in detail. b) Describe in detail about COS and MOS defuzzification methods. 8. a) Explain in detail about the application of fuzzy logic used in washing machine controller. b) Explain how ANN is used for process Identification. Code No: N0201 Set No.4 R05 2 of 2 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0506/R05 Set No. 1 IV B.Tech I Semester Supplementary Examinations, November 2011 NETWORK MANAGEMENT SYSTEMS ( Common to Computer Science & Engineering and Computer Science & Systems Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. Design and Ethernet LAN using at 10/100 Mbps switched Ethernet hub to handle the following specifications: Number of clients = 16 operating at 10Mbps Number server = 1 50% of the traffic is directed to the server Draw the configuration and indicate the transmission modes (half-duplex or duplex) on the ports. [16] 2. A network management system is a powerful tool, but it could also bring your network down if it is not managed. Explain. [16] 3. Explain the Get and Set type PDUs and PDU ASN.I. [16] 4. What is an information module? Give an example of SNMP group that includes conference information as well as compliance statements? [16] 5. (a) What are the different groups in RMON2 Management Information Base? Explain them briefly. (b) Explain RMON1 host group and alarm group. [10+6] 6. (a) Summarize the scope of the TMN recommendations. (b) Explain the different types of TMN telecommunications resources. (c) Illustrate the use of TMN standards. [8+4+4] 7. Give brief description about the following: (a) Functional components. (b) SNMP Get command. (c) ping command. [8+4+4] 8. (a) In detail explain the JDMK. (b) Explain the simplified WBEM CIM core model. [10+6] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0506/R05 Set No. 2 IV B.Tech I Semester Supplementary Examinations, November 2011 NETWORK MANAGEMENT SYSTEMS ( Common to Computer Science & Engineering and Computer Science & Systems Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. Describe in detail protocol Layers and Services provided to the upper layer. [16] 2. Explain in detail about SNMP management from a system point of view. [16] 3. An SNMP manager sends a request for the values of the sysUpTime in the System group and ifType in the interfaces group for ifNumber value of 3. write the PDUs with the fields in for (a) the get-request PDU, and (b) the get-response PDU with noSuchName error messages for ifType. [16] 4. Describe the following in detail: (a) Changes to the system group in SNMPv2 (b) Changes to the SNMP group in SNMPv2. [16] 5. (a) Explain the various functions and tables associated with Ring station and Source routing group of RMON token ring. (b) Describe briefly about functions and tables that are related to network layer matrix and application level matrix group of RMON2 MIB. [8+8] 6. Write the support of a neat sketch explain the physical realization and logical layered architecture. [16] 7. (a) How the protocol statistics can be derived? (b) Explain briefly about bit error rate tester. [8+8] 8. (a) What are the components of java management extensions? (b) Draw the flow diagram for management bean. [10+6] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0506/R05 Set No. 3 IV B.Tech I Semester Supplementary Examinations, November 2011 NETWORK MANAGEMENT SYSTEMS ( Common to Computer Science & Engineering and Computer Science & Systems Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. Draw a network configuration and the protocol-layer interface architecture for a multiprotocol bridge that connects an Ethernet LAN and token-ring LAN. [16] 2. What is SNMP management? Explain the compact of adding network management to managed nodes? [16] 3. An SNMP manager sends a request for the values of the sysUpTime in the System group and ifType in the interfaces group for ifNumber value of 3. write the PDUs with the fields in for (a) the get-request PDU, and (b) the get-response PDU with noSuchName error messages for ifType. [16] 4. What is an information module? Give an example of SNMP group that includes conference information as well as compliance statements? [16] 5. (a) Explain the different stages in Remote Network Monitoring Management In- formation Base. (b) Explain the importance of entry status textual conventions in RMON1. (c) Explain the various filter groups in RMON1. [6+4+6] 6. (a) Explain with a neat diagram the physical realization of TMN architecture. (b) Give the functions of system management functional areas. [10+6] 7. (a) Give the explanation about the commands that are used for obtaining the addresses and domain names of the servers. (b) Write short notes on ping. [10+6] 8. (a) With the help of a neat diagram explain the WMI architecture. (b) Give brief description about Java dynamic management tool kit. [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com J N T U W O R L D Code No: N0506/R05 Set No. 4 IV B.Tech I Semester Supplementary Examinations, November 2011 NETWORK MANAGEMENT SYSTEMS ( Common to Computer Science & Engineering and Computer Science & Systems Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆ ⋆ ⋆ ⋆ ⋆ 1. Explain broadband ISDN and narrowband ISDN with suitable example. [16] 2. (a) Explain how the communication is carried out in a managed object with only a type and instance. (b) Describe about the different formats of declaration of OBJECT IDENTIFIER. [8+8] 3. An SNMP manager sends a request for the values of the sysUpTime in the System group and ifType in the interfaces group for ifNumber value of 3. write the PDUs with the fields in for (a) the get-request PDU, and (b) the get-response PDU with noSuchName error messages for ifType. [16] 4. Describe the data structure of SNMPv2 PDUs with generic PDU message structure. [16] 5. (a) Describe the two methods of measuring collisions on an Ethernet LAN. (b) How would you measure the distribution of the frame size on the LAN? [8+8] 6. (a) Explain the physical architecture of a TMN with a neat diagram. (b) Give brief description about TMN management services. [8+8] 7. (a) Give brief description about SNMP command line tools. (b) What are the advantages of netstat command? [10+6] 8. (a) Explain the implementation of web server on NMS platform. (b) Briefly explain the embedded web based management. [8+8] ⋆ ⋆ ⋆ ⋆ ⋆ 1 of 1 www.jntuworld.com www.jntuworld.com