A transformer cannot raise or lower the voltage of a D.C. supply because

Electrical and Electronic Engineering (EEE) : Transformers - Quiz(MCQ)

A D.C. circuit has more losses

There is no need to change the D.C. voltage

Faraday's laws of electromagnetic induction are not valid since the rate of change of flux is zero

None of the above

Correct Answer : Option (C) : Faraday's laws of electromagnetic induction are not valid since the rate of change of flux is zero

Recently Updated in Transformers Questions

Which of the following parts of a transformer is visible from outside?

Core

Bushings

Primary winding

Secondary winding

Correct Answer : Bushings

A no-load test is performed on a transformer to determine

efficiency

copper loss

magnetising current

magnetising current and loss

Correct Answer : magnetising current and loss

Natural oil cooling is used for transformers up to a rating of

250 kVA

500 kVA

1000 kVA

3000 kVA

Correct Answer : 3000 kVA