IB Assistant Central Intelligence Officer question set 2

IB Examination 2013 Name of the Examination: Assistant Central Intelligence Officer Grade -II (Technical & Wireless Telegraphy) Examination -2013 Total Marks : 100 Date of Examination : 24/03/2013(March 24, 2013) Question No 11 to 20 (part 2)

Instructions : 1. Each question is followed by four alternatives (i), (ii), (iii) and (iv). Only one alternative is the correct answer, which should be marked by darkening the circle completely with BLUE BALLPOINT PEN only OMR response sheet provided separately. 2. Rough work, if any may be done on the question paper and at all on the OMR response sheet.

11. In put and out put of a CB amplifier when fed to an oscilloscope to see their phase relationship will show i) an ellipse Lissajous pattern ii) a circle Lissajous pattern iii) a straight line Lissajous pattern iv) none of these

12. An amplifier comprises of four stage of CE configuration with a voltage gain of approximately 30. The overall gain would approximately be i) 90 ii) 8 x 105 iii) 30 iv) 270

13. The output voltage in a CE amplifier is i) in phase with the input ii) out of phase with the input by 90° iii) out of phase with the input by 180° iv) none of these

14. An oscillator generates electrical energy in the form of AC signal without any input excitation. Isn'tit violation of law of conservation of energy. If not where does the energy come from i) the law is not valid for electronic circuit ii) the law is not violated and the energy is derived from the DC source iii) There is no energy content in the output signal iv) none of these

15. The capture range of Phase Locked Loop (PLL) is i) always greater than the lock range ii) less than or at the most equal to lock range iii) Greater than or equal to lock range iv) none of these

16. The time base of an oscilloscope is developed by i) sine waveform ii) sawtooth waveform iii) square waveform iv) output from built-in-clock

17. The transducer used in strain gauge is i) an active transducer ii) a device that converts electrical voltage into mechanical displacement iii) a device that converts mechanical displacement into an electrical current iv) a device that converts mechanical displacement into a change in resistance

18. A shunt (with reference to current meters) is a resistance i) connected across the meter to increase its range ii) connected in series of the meter increase its range iii) connected across the meter to decrease its range iv) none of these

19. Multimeter can be used to measure i) Resistance values in different ranges ii) current values in different ranges iii) Resistance values, current values (both AC and DC) and voltage values (both AC and DC) iv) none of these

20. A Maxwell bridge is used for measurement of i) resistance ii) inductance only iii) capacitance iv) both inductance and capacitance

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