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Exam Details

2022 Electrical Engineering

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Questions 300
Duration 180 mins
Package Indian Economic Service and Indian Statistical Service Examination - Previous Year Papers

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Difficulty distribution

Hard 100 33.3%
Easy 100 33.3%
Medium 100 33.3%

Question type distribution

Multiple Choices 300 100%

Syllabus

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Sample questions from this paper

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1
2022 · Unclassified
2022 Electrical Engineering
A point charge of 10⁻9 C is placed at a point A in free space. What is the intensity of electrostatic field on the surface of a sphere of radius 5 cm at centre A? (Take 1/4πε0 = 9 × 10⁹ in SI units)
A
1800 V/m
B
3600 V/m
C
5360 V/m
D
2820 V/m
2
2022 · Unclassified
2022 Electrical Engineering
A transistor has β = 105 and I_C = 840 μA. What is the value of I_B?
A
0·008 μA
B
0·08 μA
C
0·8 μA
D
8 μA
3
2022 · Unclassified
2022 Electrical Engineering
A generator develops 250 V and has an internal resistance of 100 ohm. If the load resistance is 100 ohm, then what is the efficiency of the generator?
A
80%
B
50%
C
60%
D
70%
4
2022 · Unclassified
2022 Electrical Engineering
What is the power gain of a transistor amplifier, if its current gain is 40 and voltage gain is 25?
A
100
B
1200
C
1000
D
950
5
2022 · Unclassified
2022 Electrical Engineering
A coil resistance 30 Ω and inductance 0·6 H is switched on to a 240 V supply. What are the rate of change of current at the instant of closing the switch at t = 0 and the magnitude of the final steady state current respectively?
A
80 A/sec and 80 A
B
400 A/sec and 8 A
C
8 A/sec and 80 A
D
400 A/sec and 80 A
6
2022 · Unclassified
2022 Electrical Engineering
Which one of the following statements is not correct regarding common-base amplifier?
A
The output is in the same phase as the input alternating signal.
B
It cannot operate at higher frequency as compared to CE amplifier.
C
The current gain is less than unity.
D
Impedance matching is needed when cascading because there is very large difference in the input and output impedances, the input impedance is low and the output high.