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E.g. MBA, MCA, Engineering, Medical, Animation, IIM, IIT, etc.E.g. Mumbai, Delhi, Bangalore, Pune, USA, UK, etc.2009 ECIL Placement Paper-Jobs in ECIL- Electronics Corporation of India Limited

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2009 ECIL Placement Paper, Hyderabad

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Welcome to ECIL Placement Papers 2009. Here you will find ECIL Placement PapersPattern and Download questions of ECIL Placement Papers 2009 with Answers & Solutions.

2009 ECIL Placement Paper:-

1. Consider the following expressions indicating the step or impulse response ofan initially relaxed control system-

1. (5 4e-2+) u(t)2. (e-2t +5) (u(t))3 .V(t) + 8e-2t u(t)4 . V(t) + 4e-2t 4(t)

2. Those which correspond to the step and impulse response of the same system include- 1&3Which is the following relate to rational transfer function of a system-

1. Ratio of Fourier transform of output to input with zero initial conditions.

2. Ratio of Laplace transform of output to input with zero initial conditions.3. Laplace transform of system impulse response.4. Laplace transform of system unit step response select the correct answer using the codes given below.

Codesa.) 1 and 4b.) 2 and 3c.) 1 and 3d.) 2 and 4

3. For the signal g (t) 10 cos (50 pt) cos2 (150at)The Nyquist sampling state in t seconds is

a.) 150 samples per secondb.) 200 samples per secondc.) 300 samples per secondd.) 350 samples per second

4. In the case of a 70 MHz 1F carries for a transponder band width of 36 MHz; energy must lie between MHz.

a.) 34 and 106b.) 52. And 88c.) 106 and 142d.) 34 and 142

5. Radar used to eliminate clutter in navigational application is

a.) Pulse radarb.) Tracking radarc.) MTI radard.) Mono pulse radar

6. The coupling that produces minimum interference with frequency response is-

a.) Direct couplingb.)Impedance couplingc.) R C couplingd.)Transformer coupling

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7. A superconductor is a

a.) A material showing perfect conductivity and Meissner effect below a criticaltemperature

b.) A conductor having zero resistance(placementpapers.fresherjobs4u.com)c.) A perfect conductor with highest di-magnetic susceptibilityd.) A perfect conductor which becomes resistance when the current density through it exceeds a critical value

8. When an inductor tunes at 200 KHz with 624 pF capacitor and at 600 KHz with 60.4 pF capacitor then the self capacitance of the inductor would be

a) 8.05 pFb) 10.05pFc.) 16.01pFd.) 20.01pF

9. The Q of a radio coil

a.) is independent of frequencyb.) increases monotonically as frequency increasesc.) decreases monotonically as frequency increasesd.) increases upto a certain frequency and then decreases beyond that frequency

10. When a generator of internal impedance and operating at 1GHz feeds a load via a coaxial line of characteristic impedance 50 ohm then the voltage wave ratioon the feed line is

a.) 0.5b.) 1.5c.) 2.5d.) 1.75

11. The coding system typically used in digital telemetry is

a.) PPM (pulse position modulation)b.) PAM (pulse amplitude modulation)c.) PCM (pulse code modulation)d.) PDM (pulse duration modulation)

12. Critical load acting axially on a long column

Ans: (pi)2*E*I/L2

13. Relation between moment of area and radius of gyration

Ans: I=AK2

14. Cup shaped components are produced using which operation

Ans: drawing

15. A sheet of Al alloy having 2mm thickness is welded using which process

Ans: TIG

16. Two gears having teeth 18 and 40 and center distance 56 what is the module?

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17.In thr given network, the mesh current I and the input impedance seen by the50 V source, respectively, are

a) 125/13 A and 11/8 ohms b) 150/13 A and 13/8 ohms c) 150/13 A and 11/8 ohms d)125/13 A and 13/8 ohms

18.A voltage sourcehaving a source impedance Z = R + jX can deliver maximum Average power to a load impedance Z, when

a) Z = R + jX b) Z = R c) Z = jX d) Z = R jX

19 .In the given circuit, the switch S is closed at t=0. Assuming that there isno initial Charge in the capacitor, the current i(t) for t>0 is

a) V/R e^ (-2t/RC) b) V/R e^ (-t/RC) c) V/2R e^ (-2t/RC) d) V/2R e^ (-t/RC)

20 .For the circuit in given figure, if e(t) is a ramp signal, the steady statevalue of the Output voltage v(t) is

a) 0 b) LC c) R/L d) RC