Electrical MCQ with Answer
Test Your Electrical Engineering Knowledge!
Are you gearing up for your next technical interview or competitive exam (GATE, PE, IES)? Let’s test your core fundamentals.
Swipe through to read the question, and drop your answer (A, B, C, or D) in the comments below! I’ll pin the correct answer with a detailed explanation tomorrow.
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Question 81
The rotor of 3 phase induction motor always runs at
(a) Synchronous speed
(b) Less than synchronous speed
(c) More than synchronous speed
(d) None of the above
The correct answer is (b) Less than synchronous
Question 82
Working cycles of air conditioner is measured in
(a) Domestic refrigerator
(b) Water cooler
(c) Both (a) and (b)
(d) None of the above
The correct answer is (c) – Both (a) and (b)
Question 83
Megger is used for measuring
(a) Low resistance
(b) High resistance
(c) Medium resistance
(d) Very low resistance
The correct answer is (b) High resistance
Question 84
Megger can be used of testing
(a) Open circuit
(b) Short circuit
(c) Open and short circuit both
(d) High resistance circuit only
The correct answer is (c) Open and short circuit both
Question 85
The efficiency of 3 phase transmission as compared to single phase transmission is
(a) Lower
(b) Higher
(c) Same
(d) None of the above
The correct answer is (b) Higher
Question 86
The meter of multimeter will work on
(a) DC supply
(b) AC supply
(c) AC and DC both
(d) Half wave rectified AC
The correct answer is (a) DC supply
Question 87
Transformer is a
(a) Rotating device
(b) Static device
(c) Electrostatic device
(d) Magnetic device
The correct answer is (b) Static device
Question 88
The rotor of alternator (synchronous generator) has how many slip rings
(a) Four slip rings
(b) Three slip rings
(c) Two slip rings
(d) No slip ring
The correct answer is (c) Two slip rings
Question 89
Alternator works on the principle of
(a) Mutual induction
(b) Faraday’s laws of electro magnetic induction
(c) Self induction
(d) Self and mutual induction
The correct answer is (a) Mutual induction
Question 90
Under running condition on load the angle between induced voltage and supply voltage will be
(a) 0°
(b) 180°
(c) Between 90° and 180°
(d) Between 0° and 90°
The correct answer is (d) Between 0° and 90°