An ideal transformer will have maximum efficiency at a load such that

A. copper loss = iron loss
B. copper loss < iron loss
C. copper loss > iron loss
D. none of the above

Answer: A

Explanation:

A loss in a transformer that takes place in the winding resistance of a transformer is known as copper loss. These are variable losses.

The transformer will give the maximum efficiency when their copper loss is equal to the iron loss.

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