1000+ Transformer MCQ Questions and Answers Pdf - 2

Question: 6

The function of breather in a transformer is

(A) to arrest flow of moisture when outside air enters the transformer

(B) to cool the transformer coil

(C) to cool the coils during reduced load

(D) to provide oxygen inside the tank

Question: 7

A good voltage regulation of a transformer means

(A) difference between primary and secondary voltage is maximum

(B) difference between primary and secondary voltage is least

(C) output voltage fluctuation with power factor is least

(D) output voltage fluctuation from no load to full load is least

Question: 8

A no load test is performed on a transformer to

(A) magnetising current and loss

(B) efficiency

(C) copper loss

(D) core loss

Question: 9

The nominal short circuit voltage of the transformer is defined as percentage of

(A) the nominal transformation ratio

(B) the test voltage

(C) the rated secondary voltage

(D) the rated primary voltage

Question: 10

While conducting short circuit test on a transformer the following side is short circuited

(A) primary side

(B) secondary side

(C) high voltage side

(D) low voltage side