1. Radar used to eliminate clutter in navigational application is __________________

a) Pulse radar               b) Tracking radar                  c) MTI radar                    d) Mono pulse radar

2. Sparking occur when a load is switched off because the circuit has high _______________

a) Inductance                  b) Capacitance                     c) Resistance                  d) None

3. Oscillator crystal are made of  ___________

a) Silicon               b) Germanium                    c) Quartz                   d) None

4. In order to get maximum undistorted output signal from CE amplifier with VCC 10V, the value of VCE (Q) should be approximately _________

a) 0.1V              b) 5V                c) 10V                d)  V

5. India successfully conducted its first underground nuclear experiment at Pokhran in Rajasthan on ______________

a) May 18, 1975                    b) May 20, 1974                   c) May 17, 1974                  d) May 17, 1974

6. The main atmospheric gas responsible for green house is ______________

a) Oxygen              b) Nitrogen                 c) Ozone                    d) Carbon-dioxide

7. Microprogramming is a technique

a) for programming the microprocessor

b) for writing small programs efficiently

c) for programming the control steps of computer

d) for programming o/p / i/p

8. For high power i.e. 10 w to 50 kw measurement

a) Barometer are used

b) Thermisters are used

c) Calorimetric technique

d) Calorimetric watt meter technique used

9. Pre-emphasis in FM systems involves

a) Compression of the modulating signal

b) Expansion of the modulating signal

c) Amplification of lower frequency components of the modulating signal.

d) Amplification of higher frequency components of the modulating signal.

10. The coupling that produces minimum interference with frequency response is ______________________

a) Direct coupling                 b)Impedance coupling               c) R C coupling                 d)Transformer coupling

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. In a FET the electrode, which corresponds to collector in bipolar transistor, is  __________

a) source               b) drain               c) gate                  d) none

13. Sparking between contacts can be reduced by inserting a

a) Resistance in the line

b) Capacitor in series with contacts

c) Capacitor in parallel with contacts

d) None

14. When a inductive coil connected to a 200 V, 50Hz ac supply with 10A current flowing through it dissipates 1000 watts then which of the following will have least value in ohms

a) Resistance                 b)  Reactance                     c) Impedance                  d) None

15. 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 106                b) 52. And 88                   c) 106 and 142                   d) 34 and 142