Question
For a single phase, two winding transformer, the supply frequency and voltage are both increased by 10%. The percentage changes in the hysteresis loss and eddy current loss, respectively, are
The correct answer is
10 and 21
V/f stays constant, hence peak flux density is unchanged. Hysteresis loss scales with f, increasing10%; eddy-current loss scales with f², increasing1.1²−1=21%. Thus 10%,21%.
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Important Questions from Transformer Core Losses
Eddy current loss in a transformer can be reduced by _________.
Out of the following, which loss is also a category of magnetic losses?
Transformer at no-load behaves like:
In transformer, hysteresis loss depends on:
How can eddy current loss be minimised in Transformer?
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