If the supply frequency to the transformer is increased the iron loss will:

Q. If the supply frequency to the transformer is increased the iron loss will:

A

Not change

B

Decreases

C

Increases

D

Any of the above

Solution:

As frequency increases, the flux density in the core decreases .
The iron loss is directly proportional to the frequency.
Effect of increased frequency will be reflected in increase of the iron losses.

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