8/26/2016Network, Filters and Transmission Lines | BSNL JE 2016 BSNL JE 2016 ERSTWHILE TTA Replay PLAY FREE RUMMY RUMMY NOW No Deposit Required No Deposit Required Play For Free WIN real CASH Offer valid for 48 hours MENU Home Exam Details BSNL TTA | JE 2016 – Network, Filters and Transmission Syllabus – Test Paper – 2 Lines Previous Papers BSNL TTA | JE 2016 - Network, Filters and Transmission Lines - Test Study Material Paper -2 GENERAL ABILITY TEST Results BASIC ENGINEERING 0 of 30 questions answered correctly Your SPECIALIZATION time: 00:01:57 You have reached 0 of 30 points, (0%) Test Series Buy Books Average score Contact Your score 25% 0% » To check answer key, please click on view questions button. Restart quiz View questions 1 2 3 4 5 26 27 28 29 30 Answered 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Review 1 points 1. Question In a certain parallel resonant band-pass lter, the resonant frequency is 14 kHz. If the bandwidth is 4 kHz, the lower frequency » 1. is 7 kHz » 2. is 10 kHz » 3. is 12 kHz http://bsnlje2016.com/bsnlttaje2016networkfiltersandtransmissionlinestestpaper2/ 1/8 8/26/2016 » 4. Network, Filters and Transmission Lines | BSNL JE 2016 is 17 kHz 1 points 2. Question A relay used on short transmission lines is » 1. Mho's relay » 2. None of the above. » 3. Reactance relay » 4. Impedance relay 1 points 3. Question The output of a ‹lter drops from 10 to 5 V as the frequency is increased from 1 to 2 kHz. The dB change in the output voltage is » 1. – 3 dB/decade » 2. 6 dB/octave » 3. – 6 dB/octave » 4. – 3 dB/octave 1 points 4. Question The sag of a transmission line is least a⌘ected by » 1. current through conductor » 2. self weight of conductors » 3. temperature of surrounding air » 4. ice deposited on conductor. 1 points 5. Question Impedance relay is used on » 1. All the transmission lines. » 2. Long transmission line » 3. Medium transmission lines » 4. Short transmission lines 1 points 6. Question The velocity factor of a transmission line » 1. depends on the dielectric constant of the material used » 2. increases the velocity along the transmission line » 3. is higher for a solid dielectric than for air » 4. is govern by the skin e⌘ect 1 points 7. Question Which of the following determines the characteristics of a transmission line? » 1. Length http://bsnlje2016.com/bsnlttaje2016networkfiltersandtransmissionlinestestpaper2/ 2/8 8/26/2016 Network, Filters and Transmission Lines | BSNL JE 2016 » 2. Physical dimensions » 3. Inductance » 4. Capacitance 1 points 8. Question An object becomes invisible when it undergoes ______ re›ection. » 1. irregular » 2. normal » 3. di⌘used » 4. regular 1 points 9. Question A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the re›ected voltage? HINT : Re›ection coe⌘cient of voltage is Rv= V’/V = Tv – 1 Rv = V’/V = (Zl – Zs)/(Zs + Zl) » 1. -18.18 kV » 2. 81.82 kV » 3. 18.18 kV » 4. -81.82 kV 1 points 10. Question The use of stub-matching network eliminates standing waves on _____. » 1. all of the above » 2. both sides of stubs » 3. load side to stub » 4. transmitter side of stub 1 points 11. Question In a transmission line, the characteristic impedance equals _____. » 1. Zsc/Zo » 2. √ZocZsc » 3. √Zsc/Zoc » 4. Zoc/Zsc 1 points 12. Question High voltage is used in long-distance power transmission because: » 1. The electromagnetic ‹elds are stronger. » 2. It is easier to regulate than low voltage » 3. Smaller transformers can be used. 2 http://bsnlje2016.com/bsnlttaje2016networkfiltersandtransmissionlinestestpaper2/ 3/8 8/26/2016 » 4. Network, Filters and Transmission Lines | BSNL JE 2016 2 The I R losses are lower. 1 points 13. Question What is the e⌘ect of standing waves on a transmission line? » 1. prevention of arcing » 2. increase in the power fedto antenna » 3. a cooler operating line » 4. decrease in the power fed to antenna 1 points 14. Question Transmission lines are either balanced or unbalanced with respect to _____ » 1. positive terminal » 2. ground » 3. input » 4. negative terminal 1 points 15. Question The purpose of an Attenuator is to: » 1. Decrease value of signal strength » 2. increase signal strength » 3. decrease re›ections » 4. none of these 1 points 16. Question When does a transmission line terminated in a short look like a short to the source? » 1. at less than l / 2 » 2. at less than l / 4 » 3. at quarter-wavelength » 4. at half-wavelength 1 points 17. Question Characteristic impedance of a transmission line is the impedance measured at the _____ when its length is in‹nite. » 1. midsection » 2. output » 3. input » 4. shorted end of the line 1 points 18. Question For transmission-line load matching over a range of frequencies, it is best to use a » 1. single stub of adjustable position http://bsnlje2016.com/bsnlttaje2016networkfiltersandtransmissionlinestestpaper2/ 4/8 8/26/2016 Network, Filters and Transmission Lines | BSNL JE 2016 » 2. balun » 3. double stub » 4. broadband directional coupler 1 points 19. Question A very low-loss coaxialtransmission line has 30 pF /ft. of distributed capacitanceand 75 nH / ft. of inductance.What is its characteristicimpedance? » 1. 70 Ω » 2. 50 Ω » 3. 75 Ω » 4. 95 Ω 1 points 20. Question For a distortion-less transmission line (G = shunt conductance between two wires) » 1. RL=GC » 2. R/L = G/C » 3. RG=LC » 4. RLGC=0 1 points 21. Question Ferranti e⌘ect can be compensated by which of the following » 1. series capacitor » 2. shunt capacitor » 3. shunt reactor » 4. both 1 and 2 1 points 22. Question E⌘ective bandwidth of a telephone line being used for data transmission is _______ » 1. 2400Hz » 2. 30 Hz » 3. 600Hz » 4. 300Hz 1 points 23. Question Stability of a transmission line can be increased by » 1. shunt capacitor » 2. shunt reactor » 3. series capacitor » 4. both 1 and 2 http://bsnlje2016.com/bsnlttaje2016networkfiltersandtransmissionlinestestpaper2/ 5/8 8/26/2016 Network, Filters and Transmission Lines | BSNL JE 2016 1 points 24. Question In a series resonant band-pass lter, a lower value of Q results in » 1. a larger bandwidth » 2. a higher resonant frequency » 3. a higher impedance » 4. a smaller bandwidth 1 points 25. Question The _____ is a measure of the mismatch between a load and the transmission line. » 1. Phase-shift constant » 2. Return Loss » 3. SWR » 4. re›ection coe⌘cient 1 points 26. Question The characteristic impedance will _____, if the spacing between the wires of a balanced transmission line is increased. » 1. none of the above » 2. increase » 3. decrease » 4. remain the same 1 points 27. Question Coaxial cable has a bandwidth that ranges from » 1. 10-300 MHz » 2. 5-550 MHz » 3. 10-3000MHz » 4. 5- 750MHz 1 points 28. Question Transmission lines link ______ » 1. distribution transformer to consumer premises » 2. service points to consumer premises » 3. receiving end station to distribution transformer » 4. generating station to receiving end station. 1 points 29. Question A transmission line has acapacitance of 25 pF / ft. andan inductance of 0.15 mH / ft.Determine the characteristicimpedance of the line. http://bsnlje2016.com/bsnlttaje2016networkfiltersandtransmissionlinestestpaper2/ 6/8 8/26/2016 Network, Filters and Transmission Lines | BSNL JE 2016 » 1. 50 W » 2. 100 W » 3. 200 W » 4. 130 W 1 points 30. Question The characteristic impedance of a transmission line depends upon » 1. geometrical con‹guration. of the conductors. » 2. conductivity of the material » 3. shape of the conductor » 4. surface treatment of the conductors Note : if Start Quiz button does not work after login then please refresh your page and click on Start Quiz it will works. Delhi to Mumbai on 18/05/2017 ₹ 2,757 Book Tickets Now ! Conditions Apply Now you can review your test at any time in Test Series Section RECENTS UPDATES 25th August, 2016 » Uploaded Network, Filters and Transmission Lines (SPECIALIZATION) – Test Paper - 2 in Test Series 24th August, 2016 » Uploaded GK & English(GENERAL ABILITY) - Test Paper in Test Series Show All Updates TIME LEFT FOR CLOSING DATE EXPIRED! 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