ME2305-Applied HydrauSL NO 10 11 21 26 45 50 58 59 85 87 103 111 123 126 139 146 152 160 168 172 8 13 28 30 34 37 46 47 56 57 62 66 88 YEAR Nov/Dec 2013 Nov/Dec 2013 Nov/Dec 2013 UNIT 1 1 1 PART A A B QN NO 2 1 11,b Nov/Dec 2013 1 B 11,a Nov/Dec 2013 Nov/Dec 2013 2 2 A A 3 4 Nov/Dec 2013 2 B 12,b Nov/Dec 2013 2 B 12,a Nov/Dec 2013 Nov/Dec 2013 3 3 A A 6 5 Nov/Dec 2013 3 B 13,a Nov/Dec 2013 3 B 13,b Nov/Dec 2013 Nov/Dec 2013 Nov/Dec 2013 4 4 4 A A B 8 7 14,a Nov/Dec 2013 4 B 14,b Nov/Dec 2013 Nov/Dec 2013 5 5 A A 9 10 Nov/Dec 2013 5 B 15,b Nov/Dec 2013 5 B 15,a May/June 2013 May/June 2013 May/June 2013 May/June 2013 May/June 2013 May/June 2013 May/June 2013 May/June 2013 May/June 2013 May/June 2013 May/June 2013 May/June 2013 May/June 2013 1 1 1 1 1 1 2 2 2 2 2 2 3 A A B B B B A A B B B B A 1 2 11,a,1 11,a,2 11,b,1 11,b,2 3 4 12,b,1 12,b,2 12,a,1 12,a,2 5 2 4 3 12.91 100 104 108 113 127 128 138 142 143 153 161 171 173 2 14 17 18 22 23 41 44 63 67 71 74 84 89 97 98 105 109 121 122 131 144 147 156 159 174 May/June 2013 3 A 6 May/June 2013 3 B 13.b.a.2 6 5 13.1 11.1 13.1 14.a.b.a.a.2 13.a.2 12.1 13.a.2 9 10 May/June 2013 5 B 15.b.a.1 12.b May/June 2013 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 5 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 B A A B B B B A A B B B B A A B B B B A A B B 15.2 11.a.1 12.b.1 11.b Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 5 5 5 A A B 10 9 15.a 1 2 11.2 May/June 2013 May/June 2013 May/June 2013 May/June 2013 May/June 2013 3 3 3 4 4 B B B A A 13.2 13.1 13.2 Nov/Dec 2012 4 B 14.a.b.b.a.a.1 7 8 May/June 2013 4 B 14.2 7 8 14.b.b May/June 2013 May/June 2013 May/June 2013 May/June 2013 4 4 5 5 B B A A 14.1 14.a.1 .a.b. a.1 15.b.2 May/June 2012 May/June 2012 May/June 2012 May/June 2012 May/June 2012 May/June 2012 1 1 2 2 2 2 B B A A B B 11.a.2 May/June 2012 May/June 2012 May/June 2012 4 4 4 4 A A B B 7 8 14.1 14.a.2 5 6 13.b.1 May/June 2012 3 B 13.b.1 May/June 2012 1 B 11.2 May/June 2012 May/June 2012 3 3 B B 13.a.2 May/June 2012 May/June 2012 May/June 2012 May/June 2012 2 3 3 3 B A A B 12.2 15.a.1 May/June 2012 2 B 12.a.a.b.2 1 2 May/June 2012 1 B 11.b.2 May/June 2012 4 B 14.177 180 184 3 7 Nov/Dec 2012 Nov/Dec 2012 Nov/Dec 2012 May/June 2012 May/June 2012 5 5 5 1 1 B B B A A 15.b.a.a.b 24 25 29 31 43 49 61 64 68 75 80 86 101 102 106 110 119 120 132 133 148 May/June 2012 .1 11.2 4 3 12.1 12.b.b.1 13. 2 15.a.2 15.a.b.2 Nov/Dec 2011 3 B 13.2 11.1 12.1 Nov/Dec 2011 Nov/Dec 2011 Nov/Dec 2011 Nov/Dec 2011 Nov/Dec 2011 3 3 4 4 4 B B A A B 13.b.1 3 4 Nov/Dec 2011 2 B 12.151 155 166 167 175 181 6 12 15 19 20 35 42 51 65 69 72 76 79 83 95 96 107 114 117 118 130 135 145 150 154 170 176 178 May/June 2012 May/June 2012 May/June 2012 May/June 2012 May/June 2012 5 5 5 5 5 A A B B B 9 10 15.a.1 Nov/Dec 2011 4 B 14.a.1 15.b.b Nov/Dec 2011 Nov/Dec 2011 Nov/Dec 2011 4 5 5 B A A 14.b.2 11.1 May/June 2012 5 B 15.b.1 Nov/Dec 2011 2 B 12.a.a.1 13.b.a.2 Nov/Dec 2011 Nov/Dec 2011 Nov/Dec 2011 Nov/Dec 2011 Nov/Dec 2011 2 2 3 3 3 B B A A B 12.a.2 7 8 14.1 Nov/Dec 2011 Nov/Dec 2011 Nov/Dec 2011 Nov/Dec 2011 Nov/Dec 2011 1 1 1 2 2 B B B A A 11.a.a.a.2 .2 5 6 13.b.2 9 10 Nov/Dec 2011 5 B 15.b.1 Nov/Dec 2011 Nov/Dec 2011 1 1 A A 2 1 Nov/Dec 2011 1 B 11.b.a.2 Nov/Dec 2011 Nov/Dec 2011 5 5 B B 15. b.a 13.a.b.2 Nov/Dec 2010 2 B 12.a May/June 2011 Nov/Dec 2010 Nov/Dec 2010 Nov/Dec 2010 Nov/Dec 2010 5 1 1 1 1 B A A B B 15.b 1 2 11.1 Nov/Dec 2010 2 B 12.b 3 4 May/June 2011 2 B 12.b 5 6 13.1 11.a May/June 2011 May/June 2011 May/June 2011 1 2 2 B A A 11.2 4 3 Nov/Dec 2010 2 B 12.b.a.1 1 2 May/June 2011 1 B 11.b 14.a May/June 2011 May/June 2011 May/June 2011 May/June 2011 May/June 2011 May/June 2011 May/June 2011 May/June 2011 May/June 2011 May/June 2011 May/June 2011 2 3 3 3 3 4 4 4 4 5 5 B A A B B A A B B A A 12.a.b.b 7 8 14.2 Nov/Dec 2010 1 B 11.2 54 60 .a.a 9 10 May/June 2011 5 B 15.182 4 9 27 33 40 52 55 70 78 82 94 112 116 129 134 140 149 162 165 179 1 5 16 32 36 38 39 48 53 Nov/Dec 2011 May/June 2011 May/June 2011 5 1 1 B A A 15.1 Nov/Dec 2010 Nov/Dec 2010 Nov/Dec 2010 1 2 2 B A A 11. b.a.1 Nov/Dec 2010 Nov/Dec 2010 Nov/Dec 2010 3 4 4 B A A 13.2 Nov/Dec 2010 5 B 15.a.a Nov/Dec 2010 5 A 9 5 A 10 Nov/Dec 2010 5 5 B B 15.2 Nov/Dec 2010 3 B 13.b.3 6 5 Nov/Dec 2010 3 B 13.73 77 81 90 92 93 99 115 124 125 136 137 141 157 158 163 164 169 183 Nov/Dec 2010 Nov/Dec 2010 Nov/Dec 2010 Nov/Dec 2010 2 2 3 3 B B A A 12.1 Nov/Dec 2010 3 B 13.1 15.2 Nov/Dec 2010 4 B 14.a.b.1 Nov/Dec 2010 Nov/Dec 2010 .b.a.2 7 8 Nov/Dec 2010 4 B 14.b.b.1 12.1 Nov/Dec 2010 4 B 14.b.b.2 Nov/Dec 2010 5 B 15. Also state the applicatio for closed centre. Give its graphical symbols. List the applications of fluid power in agriculture and aviation industries. Differentiate double rod and tandem cylinder. open center and tandem centre valves. where + is extension and – retraction. What is mean by sizing of accumulators? What is the function of intensifiers? Sketch and explain commonly used 3 Position 4 way direction control valves.ME2305-Applied Hydraulics and Pneumatics Detailed Questions Draw the symbols of pressure relief valve. Differentiate fixed and variable displacement pumps. State the applications of fluidic devices. and how does it work? Classify the types of hydraulic cylinders. Design and draw a sequential circuit for the operation of two cylinders X and Y using cascade method What is the advantage of using servo systems? List out any two PLC applications in fluid power control. Draw a neat sketch of variable discharge axial flow piston pump. Explain the importance of electro hydraulic servo systems an proportional valves.B+B-. Explain the application of accumulator. Give the advantage of fluid power system. Where speed control circuits are required? What is the advantage of using sequencing circuit? Explain the constructional features of filter. Write the advantages of fluid power system. State and explain the types of fluid power control systems with its advantages. Also illustrate its types. Design an electro pneumatic circuit for the following sequence: A + A. Also explain its construction and operation with how to calculate minimum and maximum discharge. Write the procedure to calculate the pressure drop in hydraulic circuits. regulator and lubricator with a sketch. Describe the applications of fluid power system and list the main components required for power pack with circuit. Why do screw pumps generate less noise while running? Explain any three type of special cylinders used in hydraulics with neat sketch. Give its graphical symbol. Write short notes on lobe pump. Describe the working of a double acting tanden cylinder and gear motor. . What are the main advantages of gear motor? What is a pressure compensated vane pump. With the help of circuit diagrams. What is cylinder cushion? Explain the construction and working of bent axis type piston pump with neat sketch. Explain the various type of fluid power system. Write notes on Neutralization number Write notes on Frictional losses in laminar and turbulent flow. What is a balanced vane pump? Explain the construction and working of a swash plate type piston pump with neat sketch Write short notes on telescopic cylinder. Explain the electro hydraulic servo system with a neat sketch . Explain the installation procedures for various hydraulic systems and its maintenance procedures. What is an intensifier and where is it used? What is the function of unloading valve and sequence valve? Explain the different types of accumulator with neat sketch Explain the commonly used electrical control devices in fluid power system. Explain the working of a pilot operated pressure relief valve with neat sketch. Darcy-Weisbach equation. Write the advantages and applications of fluid power with respect to machine tool applications. When to use timer and relay? Why? Differentiate pressure switch and temperature switch. Design the hydraulic press circuit using unloading valve with neat sketch. What do you mean by logic control? Design an electro pneumatic circuit using cascade method for the following sequence: A +B+B-A-C+C-. Explain the use of counter-balance valve with a circuit What is a power pack? What is the function of air filter and dryer? With a neat sketch explain the working of piston compressor. Laminar and turbulent flow. Under what conditions pneumatic systems are preferred? List the primary functions of hydraulic fluid. How to select oil for the industrial application. 2. Explain any two types of accumulator circuits with sketch.List the basic arrangements in hydrostatic drives. Mention the advantages of air motor over electric motor. Explain meter-in and meter-out circuits with neat sketch Design an electro pneumatic circuit using cascade method for the following sequence: A +B+B-A-C+C-. regulator and lubricator. Write short notes on mufflers. Explain the various type of pneumatic switching elements with simple sketch. Design the circuit to speed up the extending speed of a double acting cylinder with suitable circuit. What is a ladder diagram? Define low cost automation. Write the procedure for selection of filter. Write short notes on 1. Explain the construction of pressure relief valve with neat sketch. What is moody diagram? Explain the important characteristics of its Name the different types of cylinder moundings. Explain the working of a gear type motor and vane type motors Explain the cushioning of cylinder. With a neat sketch. P. Assume specific gravity of oil 0. . assuming an isothermal charge and discharge of the accumulator. A pump having a displacement of 80cm3. explain the construction and working principle of an external gear pump. Actual pump delivery required. Calculate the overall efficiency of the pump and the theoretical torque required to operate the pump. Write short notes on direct acting pressure reducing valve.B and R (figure). What are the positive displacement pumps? With a neat sketch. “Quick exchange valve is used to increase piston speed of spring return single-acting pneumatic cylinder” justify.A. State Pascal’s with an industrial example. delivers oil at the rate of 1. State the significance of “K factor” in determines the losses in valves and fittings. Determine the head loss (in units of bar) across a 40mm wide open gate valve. Write short notes on pilot operated sequence valve. Cylinder B pushes the parts from the holder into a basket and returns to its initial position.015 m3/s. determine 1.Draw and explain the ladder for electrical control regenerative circuit.9 flo through it at a rate of 0. when hydraulic oil of specific gravity 0.25lps at 1200rpm and 75bar. Explain the major components of PLC with a block diagram. the K factor for wide open gate valve is 0. Design a pneumatic sequential circuit for the above operation using cascade method. A pump/accumulator power pack is to supply the fluid flow demanded by a hydraulic system as shown figure. 2. With a neat sketch. With a neat sketch. explain the importance of a filter and regulator unit in pneumatic system. Hydraulic oil of kinematic viscosity 0. Explain the advantages and limitations of using petroleum based hydraulic oils. Valve bodies are to be marked with the letters. If th prime mover input torque is 90N-m. Stamping cylinder A stamps the letter in the body and returns. explain construction and cushioning mechanism in a cylinder. Find the head loss due to friction (in units of bar). The valve bodies are placed in the holder manually.9 stokes. and The accumulator volume. explain the working principle of balance vane pump. The maximum volume of fluid to be stored in the accumulator. State any four advantages of pneumo-hydraulic circuit. Mention the significance of a telescopic with an industrial example.19.9. flows through a 35mm diameter pipe at a velocity of 4m for a length of 100m. Explain in detail any eight desirable properties of a good hydraulics fluid. in fig 1 and fig 2. The system working pressure is 125bar and the maximum pressure at the accumulator is 200b Assuming the accumulator precharge pressure is 90% of its maximum working pressure. Compare the ladder diagram of electrical circuit and PLC circuit Compare hydraulic and pneumatic drives for automation. With a neat sketch. List the advantages and limitations of a spring located accumulator. List any four types of electric switches used in electrically controlled fluid power circuits. Identify the following elements. explain the working principle of a screw compressor. Write short notes on (1) Laminar and turbulent flow. Why fluid power system is called muscle of the industry? What are the basic components that are required for a hydraulic system? Explain their functions. What are the factors to consider in the selection of a pump? What is a function of an unloading valve? List the application of an intensifier. with the block diagram. (2) Reynolds number. How are the pumps classified? Explain with suitable sketch the working of unbalanced vane pump? Explain the working principle of external gear pump and determine its performance measures. What is in FRL unit? What is the purpose of a shuttle valve in a pneumatic circuit? Discuss the construction of FRL unit. followed by the cylinder (B). What types of fluids are available for hydraulic system? Explain two of them? Explain the working principle of hydraulic press with neat sketch. cylinder (A) extends. Explain hydromechanical servo valve with a industrial example. State any four common causes for hydraulic system breakdown. +indicates extension and –indicates retraction of cylinders. Define the terms absolute viscosity and kinematic viscosity.List the three types of proportional control valves. Once the part is transferred. Develop an electro pneumatic circuit by cascade method for the following sequence: A+B+B-A. What are the factors consider during the installation pneumatic system? . Explain with a suitable circuit how a accumulator can be used as (1) emergency power source (2) A leakage compensator. Sketch the ladder logic diagram for the above operation. Describe an hydraulic circuit for synchronizing two cylinder. Highlight the advantages of regenerative circuit and explain it with a suitable application. What is a power pack? How to microprocessor differ from PLC’s? List out any four operating problem associated with pumps and valves and the possible process and suitable remedy for each problem. Two pneumatic cylinders are used to transfer parts from a magazine onto a chute figure. explain the major units of a PLC. What is a non-positive displacement pump? What is a telescope cylinder? What is its used? Draw a single cylinder continuous reciprocating circuit using suitable components and also give the specification. Explain the construction and operation of a two stage electro hydraulic servo valve. When a push bottom is pressed. Explain the working principle of double acting cylinder with neat sketch. pushing the part from the magazine and position it in preparation for transfer by cylinder (B) onto the outfeed chute. Write short notes on Bistable Flip-Flops.where and B stands for cylinders. Explain the operation of a check valve with a neat sketch. the cylind (A) retracts. find the pressure section 2.7mm diameter pistons arranged on a 130mm diameter piston circle.5 Lps. Also explain the working of quick exhaust valve. Compare and contrast between hydraulic. How do pneumatic actuators differ from hydraulic actuators? State difference between quick exhaust valve and flow control valve. If the pressure at a section 1 is 200 KPa. The speci gravity of the fluid is 0. Explain the working of a pressure reducing valve with an example application. List and explain various hydraulic fluids.Explain the working principle of a PLC with neat sketch. Name four types of cylinder mountings. Draw the ANSI symbols for (1) a pilot operated check valve. The discharge through the pipe is 7. List out the applications of fluid power employed in different industries/fields. What are the different types of fluid motors? Also explain the function of them. .25m above datum. What is PLC? Explain the function of three basic elements of PLC. List the basic components required in hydraulic system.9. (2) a shuttle valve. Why are hydraulic systems preferred for heavy work than the pneumatic systems? What is neutralization number of hydraulic fluid? Give its significance. Find: (1) volumetric efficiency. Explain the working of an intensifier with an example application. State the various types of air control valves. What is meant by servo system? What is ladder diagram? Describe the working of electro hydraulic servo valves with a block diagram. Name the basic type of accumulators used in hydraulic systems. Define fluid power. (2) mechanical efficiency. Explain any one applications of Pascal’s law with neat diagram. List the three ways of applying flow control valves. pneumatic and electro-mechanical power systems. The volumetric efficiency is 9 A hydraulic motor has a displacement of 150cm3 and operates with a pressure of 85bars and a speed 1800rpm. Compare the use of fluid power to a mechanical system by listing advantages and disadvantages. Find the offset angle for an axial piston pump that delivers 1.25Lps at 2000rpm. Name two undesirable results when oil with a viscosity that is too high. Compare pneumatic system with hydraulic system. State at least two applications. Classify the positive displacement pumps and describe the constructional features of screw pumps. (3) overall efficiency and ( KW power delivered by the motor. Fluid is flowing through a tapering pipe having a diameters 50mm and 25mm at sections 1 and 2 respectively. Why are the double acting cylinders known as differential cylinders? Enumerate the working principle of balanced vane pump with neat sketch. The section 1 is 3 m above datum and section is 1. Write Pascal’s law. If the actual flow rate consumed by the motor is 5Lps and the actual torque delivered by th motor is 185 N-m. Also write the advantages and disadvantages. The pump has nine 12. How 4/3 direction control valve is working in hydraulic power circuits? Explain the construction detail with neat sketch. identify the probable causes and also give remedies them. +indicates extension and –indicates retraction of cylinders. What is a bistable flip-flop? If an air cylinder produces erratic cylinder action. Its friction may be taken as 5 percent. Draw and explain a basic hydraulic circuit employing an intensifier for using in a punching press. The ram has a diameter of 300mm and stroke of 6m. What are the functions of accumulators? Mention few applications where piston motors are employed. Find the total w supplied and power delivered by hydraulic appliances by the accumulator. It takes two minutes to fall through the full stroke. Draw and explain the construction and operation of proportional pressure relief valve. What are electrohydraulic servo systems? Write the advantages of the electrohydraulic servo systems over hydro mechanical servo system. when 0.0075 m 3/s of liquid being delivered by a pump. What is the purpose of pressure compensated control valve? An accumulator is loaded with 400KN weight. Develop an electro pneumatic circuit by cascade method for the following sequence: A+B+B-A+ wher and B stands for cylinders. Explain with neat sketch the working of semi-automatic control of a double acting pneumatic cylinder. while the accumulator descends with the stated velocity. Also write the remedial actions for t faults. . What do you mean by bleed-off circuit control? Distinguish between meter-in and meter-out circuit with respect to speed control circuits. Draw the graphical symbols of the valve. Explain the working of a hydraulic circuit used in drilling machine. Draw the block diagram of a PLC and explain the working of major elements. List out any five types of faults that can be found in compressors.What is the purpose of cushioning cylinder? Define the terms used to evaluate the performance of hydraulic motor. Take the density oil is 1000 N/m3. MARKS 2 2 16 Test Questions 10 4 16 2 2 7 16 4 16 2 2 5 8 10 16 16 2 2 16 8 16 2 2 16 16 2 2 8 8 8 8 2 2 12 4 12 4 2 4 4 8 8 9 3.b .a 3. b 8 .2 8 8 8 8 2 2 5.a 2.a 4.b 5.b 3 6 7 4.b 16 12 4 2 2 6 16 16 2 2 12 4 8 8 2 2 12 4 12 4 2 2 12 4 8 8 2 2 8 8 6 16 2 2 8 5 2 2.b 6 7 1.a 5. b 6 8 2 2 4 5 6.a 2.8 10 6 2 2 3 7 8 6.a 12 8 8 6.a 8 8 8 2 2 8 10 6.b 16 .b 3 9 6.b 2 2 8 8 4 5 2. a 3.a 3.a 2 6 .b 16 8 2 2 4 8 10 6 5.a 8 8 8 2 2 8 3.a 3.b 2 3 1.b 6 1.b 4 8 8 10 6 2 2 8 2 6 3.2 2 8 8 8 10 2 2 8 8 8 8 2 2 3 7 3. b 8 6.8 2 2 16 16 2 2 4 9 2 16 16 2 2 16 16 2 2 16 16 2 2 2 16 16 2 2 8 8 2 1 5 2 1 3 1 1 5 1.a 8 1.b 8 8 2 2 1 10 8 1.a . b 8 8 5.a 5.a 1.b 9 10 16 2 9 2 10 8 8 1.a 10 6 5.a .a 1.4 4 2 2 4 12 4 1.b 8 8 2 2 5.