Here I am providing you Questions of Previous Years Papers of ONGC (Oil and Natural Gas Corporation Limited) Graduate Trainee Exam (Electronics) for your preparation.

ONGC Graduate Trainee Exam (Electronics) Question:

1. aspect ratio in TV is width to height.

2. Adsl download rate is high compare to upload.

3.110 is class C in IP address.

4. if sun near to earth it is called ?

5. what is indicted the arrow head in transistor ?

6. if 100 battery of 9 volt is connect in parallel the what is output voltage ?

7. question related to satellite orbit

8. pcm,dm.dpcm technique

9. thyresistor

10. Carrier SYNCHRONIZATION not needed in QPSK,PSK,FSK?

11. CRO AND SCR

12. LIJJAJOUS pattern

13. laser is produce white light due to ?

14. wein bridge is use to measure of frequency.

15. radar system is using multiple of 16 then what is the multiplier
a) 2 b)4 c)8 d)16

16. x= ab +bc is having how many how's in the truth table?

17. 1 nepar=_ db

18. resolution of 6 bit is ?

19. Find correct parity as odd parity : Rightmost bit as parity bit : 1111111 1 , 0011010 1 , 1100110 1 , 0000000 0.

20. slew rate

21. fetch cycle

22. voltmeter sensitivity is measure in ?

23. microcontroller is having?

24. pointer

25. tunnel diode

26. BCD to binary converter

27. baud rate and bit rate which is grater ?

28. ideal op amp is having _i/p , _o/p , _bandwidth ?

29. IC 555 timer is having how many flip flop and comparator

31. Modulation index increased from 0 to 1 . Transmitted power now ?

32. De-emphasis is used because

33. Voltage gain of emitter follower : <=1 , =1 , >=1 , cannot say

34. CRO uses which method of focusing

35. Positive Feedback is same as : degeneration , regeneration

36. Lowest Efficiency in Power AMPLIFIER IS CLASS A , B , AB , C ?

37. 2 heater 1000W, 250V connected in series in 250V , 50HZ AC mains. Power drawn =?

38. HTTP = stateful/stateless protocol ?

39. which Layer responsible for delivery of packet from node to node ?

40. Difference between controlled variable and desired value of process control system

41. Why differentiator is not part of control system : Increases input noise , increases error , reduces gain, reduces damping

42. Which is analog : DCM , DM , DPCM , PWM

43. Identical Telephone no. under different exchanges are distinguished by : Modulation indices , language digit , access digit , area code

44. Common ckt in Freq Hopp Spread Spectrum and Direct Seq Spread Spectrum : correlator , Freq Synthesizer , Sweep Generator , Pseudo Random Noise Code Generator

45. Minimum Bwto transmit 56 kbps with no noise ?

46. Minimum Bwto transmit 56 kbps with no noise ?

47. f = 10 kHz sampled at Nyquist rate time int B/W 2 success samples ?

48. Find correct parity as odd parity : Rightmost bit as parity bit : 1111111 1 , 0011010 1 , 1100110 1 , 0000000 0

49. Dynamic memory cell store data in : register , capacitor

50. +0.5 V in TTL logic is : high , low , undefined , high impedance

51. 5th clock of johnson counter gives o/p = 0111 , 6th clock gives o/p = ?

52. Volts / div on CRO changes : gain in vertical / sec , : gain in horizontal / sec , freq of timebase , freq of trigger

53. Measurement of Q is based on principle of : Resonance , Mutual Inductance , Piezoelectric Effect , Peltier Effect

54. Laser light is brighter because : Pure , Coherent , White , Monochromatic

55 Centre tapped transformer in single phase cycloconeuses : 2 , 4 , 6 , 8 SCR

56. Maximum height of satellite : Apogee , Perigee

57. Satellite stays in orbit because : Satellite wt. + speed , gravitational pull + inertia , centripetal force +speed , satellite wt +pull of sun and moon

58. FET depends on controlling current through SC change : 1 polarity , 2 polarity , 4 , 8 polarity

59. Beta : Current gain in CC Mode , Current gain in CE Mode, Voltage gain in CC Mode, , Voltage gain in CE Mode

60. Flash Analog To Digital of each comparator is connected to : decoder , priority encoder , MUX , Demux

61. To serially shift a nibble of data in shift register there must be clock pulses : 2 , 4 , 8 , 1 clock pulse for each data

62. Mod 10 counter uses Flip flop : 10 , 4 , 2 , 8

63. Which family IC have better noise immunity : TTL , ECL , CMOS , DTL

64. Address required for 4096 bit memory arranged in 512 X 8 memory

65. When 8 bits serial in / out shift reg. I sused for 20 (mew)sec time delay. Find clock frequency

66. Conversion time of 6 bit successive approximation type ADC : 32 , 64 , 6 , 1/6 usec

67. Fibre optic cable best for high speed data transfer : single mode step index , multiple mode step index , single mode graded index , multiple mode graded index

68. Microcontroller includes : CPU + Memory + I/O + Clock Generator , CPU + Memory + I/O , CPU + I/O

69. Flag to manipulate movement of string : parity , zero , direction , inter

70. Microwave signal propagates by way of : direct , surface , sky , standing wave