1000+ Transformer MCQ Questions and Answers Pdf - 1
Question: 1
No load on a transformer is carried out to determine
(A) efficiency of the transformer
(B) magnetising current
(C) copper loss
(D) magnetising current and loss
Ans: D
magnetising current and loss
Question: 2
The power transformer is a constant
(A) main flux device
(B) power device
(C) current device
(D) voltage device
Ans: A
main flux device
Question: 3
Material used for construction of transformer core is usually
(A) silicon steel
(B) aluminium
(C) wood
(D) copper
Ans: A
silicon steel
Question: 4
The path of the magnetic flux in transformer should have
(A) low resistance
(B) high resistance
(C) low reactance
(D) high reluctance
Ans: C
low reactance
Question: 5
During short circuit test iron losses are negligible because
(A) full load current is not supplied to the transformer
(B) the voltage applied on primary side is low
(C) the voltage on secondary side does not vary
(D) the current on secondary side is negligible
Ans: B
the voltage applied on primary side is low
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