HAL Technical Exam Papers

HI I would like to have the previous years question paper for the Technical Examination for the Electronics Discipline?

[pawan]

The previous years question paper for the Technical Examination for the Electronics Discipline is as follows:

Electronics Questions

1. When the temperature of the room increased then the energy of semiconductor...

2. Power diode is generally made from: - Silicon/Germanium/Both/None of these

3. Thermionic Emission of electron is due to.............

4. When the both junction of NPN diode is reverse biased, then the diode is in which mode: -

a) Active b) Cutoff c) Saturation d) inverted

5. Which transistor mode gives the inverted output: -

a) Common Emitter b) Common Base c) Common Collector d) None of these

6. Which coupling gives the higher gain in case of amplifier: -

a) Capacitor coupling b) Impedance coupling c) Transformer coupling

7. Which distortion is least objectionable in audio amplification: -

a) Phase b) Frequency c) Harmonic d) Intermediation

8. A narrowband amplifier has a band pass nearly............of central frequency:-

a) 33.3% b) 10% c) 50%

9. Frequency of wein bridge oscillator

10. Phase shift oscillator consists: -

a) RL b) RC c) RLC

11. Crystal oscillator frequency is very stable due to:-

12. Multivibrater Produces: -

a) Sine wave b) Square wave c) Smooth wave d) sawtooth

13. Convert the 101101 Binary number into octal no: -

a) 65 b) 55 c) 51 d) 45

14. 10 in BCD: -

a) 10100 b) 1100 c) 010111 d) None of these

15. Which PNP device has a terminal for synchronizing purpose:-

a) SCS b) Triac c) Diac d) SUS

16. In 3-Phase full converter, the output during overlap is equal to.................

17. Addition of indium in semiconductor crystal makes: -

a) PNP b) NPN

18. Free electron exists in which band: -

a) 1 b) 2 c) 3 d) Conduction band

19. Ripple factor of half wave rectifier: -

a) 1.21 b) 0.48 c) 0.5