Oil and Natural Gas Corporation is the government undertaking that works under the Ministry of Petroleum and Gas.
ONGC Graduate trainee model papers for Fire, Medical, Assistant Executive, Finance & Accounts, HR and Security Officer Examination.

The selection process will comprise three-stage process –

Written Test
Personal Interview
Medical examination

Written Test will consist of multiple-choice objective type questions:

Aptitude ( Around 50 question)
General Awareness ( Around 50 question)
Subject Knowledge ( Around 100 question)

Duration for ONGC GT Exam --3 hours


ONGC GT electronic engineering question paper 2014

1 . Two coils in differential connection have self-inductance of 2 mH and 4 mH and a mutual inductance of

0.15 mH. The equivalent inductance of the combination is

A. 5.7 mH

B. 5.85 mH

C. 6 mH

D. 6.15 mH.

2. Two point charges Q and -Q are located on two opposite corners of a square as shown in figure. If the

potential at the corner A is taken as 1V, then the potential at B, the centre of the square will be

1. zero

2.

3. 1V

4.

3. Optocouplers combine

A. SITs and BJTs

B. IGBTs and MOSFETS

C. Power transformers and silicon transistor

D. Infrared light-emitting diode and a silicon phototransistor

4. The difference between the indicated value and the true value of a quantity is known as

A. Gross error

B. Absolute error

C. Dynamic error

D. Relative error

5. The principles of homogeneity and super-position are applied to :

A. linear time variant sy stems

B. non-linear time variant sy stems

C. linear time invariant sy stems

D. non-linear time invariant sy stems.

6. In a 8085 microprocessor sy stem with memory mapped I / 0,

A. I / 0 devices have 8-bit addresses

B. I / 0 devices are accessed using IN and OUT instructions

C. there can be a maximum of 256 input devices and 256 output devices.

D. arithmetic and logic operations can be directly performed with the I / 0 data.

7 . The transistor shown in figure below, is biased

1. at cut-off

2. at saturation

3. well into saturation

4. well into cut-off

8. In any transmitting antenna sy stem, efficiency primarily depends upon

A. ohmic losses of various conductors

B. radiation resistance

C. ground conductivity

D. atmospheric conditions.

9. An instruction used to set the carry Flag in a computer can be classified as

A. data transfer

B. arithmetic

C. logical

D. program control

10. The binary representation of 5.37 5 is

A. 1 1 1 .101 1

B. 101 .1 101

C. 101 .01 1

D. 1 1 1 .001

1 1 . Dislocations in materials are

A. point defect
B. line defect

C. planer defect

D. surface defects.

12. In TV sy stem, vertical pulses are separated out from horizontal pulses by the use of

A. integrator

B. differentiator

C. sweep credit

D. sync separator.

13. Frequency in the UHF range propagate by means of

A. Ground waves

B. Sky waves

C. Surface waves

D. Space waves.

14. 200 MHz may be classified as

A. VHF

B. SHF

C. UHF

D. EHF

15. A communication satellite is a repeater between

A. a transmitting station and a receiving station

B. a transmitting station and many receiving stations

C. many transmitting stations and many receiving stations

D. none of the above

16. The power in a series R-L-C circuit will be half of that at resonance when the magnitude of the current is

equal to

A. V / 2R

B. V /

C. V /

D.
17 . A point charge Q is located on the surface of a sphere of radius R as shown in the figure. The average

electric field on the surface of the sphere will be

1. infinite

2.

3.

4. Zero

18. The efficiency of a chopper can be expected in the range

A. 50 to 55 percent

B. 65 to 7 2 percent

C. 82 to 87 percent

D. 92 to 99 percent

19. Which one out of the following instruments should be used to measure 600 kV a.c. voltages?

A. Hot wire instrument

B. Electrostatic voltmeter

C. Moving coil voltmeter

D. Moving iron voltmeter.

20.

Which one of the following transfer functions represents the Bode plot shown in the above figure :

1.

2.

3.

4.

21 . The following programme is run on an 8085 microprocessor,

Memory address in Hex Instruction

2000 LXI SP, 1000

2003 PUSH H

2004 PUSH D

2005 CALL 2050

2008 POP 2050
2009 HIT

As the completion of execution of the program, the program the program counter of the 8085 contains .........,

and the stack pointer contains ........

1. 2050, OFFC

2. 2251 , OFFC

3. 1025, OCCF

4. 1025, OCCF

22. With reference to figure, value of VCE is

4. none of the above

23. The smallest change in sound intensity that can be detected

C. 10 dB

D. 20 dB.

24. In a generic microprocessor, instruction cy cle time is

A. shorter than machine cy cle time

B. larger than machine cy cle time

C. exactly double the machine cy cle time

D. exactly the same as the machine cy cle time

25. The value of M in the end will be

Do 100 I = 1 , 2

DO 200 J = 1 , 2

M = M + I + J

200 CONTINUE

100 CONTINUE

STOP

END
1. 10

2. 1 1

3. 12

4. 14

26. Resistivity of electrical conductors is most affected by

A. temperature

B. pressure

C. composition

D. all of the above.

27 . In CCIR B-sy stem of TV, blanking pulse is placed during

A. equalizing pulse

B. retrace interval between each line

C. retrace period of vertical line

D. none of the above.

28. The polarization required in ground wave propagation is

A. Horizontal (linear)

B. vertical (linear)

C. Circular

D. Elliptical

29. Multicavity Kly stron

A. is not a microwave device

B. is not a good low level amplifier because of noise

C. is not suitable to pulse operation

D. has a high repeller voltage to insure small transit time

30. Transponder comprises of

A. Transmitter

B. Receiver

C. Antenna

D. a, b, c combined
1 . If the switch K is closed at a proper instant there will be no transient

2. The instant at which K is closed such that the transient is zero depends on the frequency of the supply

3. The instant at which K is closed such that the transient is zero depends on the circuit elements

4. There will alway s be a non-zero transient after the switch K is colosed.

Of these statements :

1. 1 alone is correct.

2. 1 and 2 are correct.

3. 1 and 3 are correct

4. 4 alone is correct.

32. A circular ring carry ing a uniformly distributed charge Q and a point charges -Q on the axis of the ring

are shown in the fig. The magnitude of the dipole moment of the charge sy stem is

1. Qd

2. Q R2 / d

3. Q

4. QR.

33. Which of the following regulator provides output voltage polarity reversal without a transformer

A. Buck regulator

B. Boost regulator

C. Buck-boost regulator

D. Cuk regulator

34. The deflection of hot wire instrument depends on

A. RMS value of alternating current

B. voltage

C. average value of a.c. current

D. instantaneous value of a.c. current.


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