The frictional loss in a transformer is

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

0 %

10 %

50 %

More than 50 %

Correct Answer : Option (A) : 0 %

Explanation : As we know, the transformer is a static device based on the principle of mutual induction with no rotating part, so there is no frictional loss.

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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

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