Question

The voltage regulation for  transformer is given by ___________

(a) (E2-V2)/E2

(b) (E2-V2)/V2

(c) (V2-E2)/E2

(d) (V2-E2)/V2

The question was posed to me in semester exam.

I need to ask this question from Voltage Regulation of Transformer in section Transformers of Electrical Machines

Answer 1

Correct answer is (a) (E2-V2)/E2

For explanation I would say: Voltage regulation is the change in secondary voltage with secondary rated voltage.