1000+ Transformer Objective Questions and Answers Pdf - 2

Question: 6

The core used in high frequency transformer is usually

(A) mild steel core

(B) air core

(C) cost iron core

(D) copper core

Question: 7

Which type of winding is used in 3-phase shell type transformer?

(A) rectangular type

(B) cylindrical type

(C) sandwich type

(D) circular type

Question: 8

The secondary winding of which of the following transformers is always kept closed?

(A) current transformer

(B) potential transformer

(C) step up transformer

(D) step down transformer

Question: 9

An open circuit test on a transformer is conducted primarily to measure

(A) efficiency

(B) total loss

(C) core loss

(D) copper loss

Question: 10

Which of the following does not change in a transformer?

(A) current

(B) frequency

(C) voltage

(D) all of the above