Question

To conduct the open circuit test, test is conducted on the _____________

(a) l.v. side

(b) h.v. side

(c) primary

(d) secondary

This question was addressed to me during a job interview.

I'd like to ask this question from Open Circuit and Short Circuit Test topic in division Transformers of Electrical Machines

Answer 1

Correct option is (a) l.v. side

To explain I would say: OC test is performed on the l.v. side of the transformer because the l.v. winding will have lower stress on the insulation and no damage will occur.