A 2 kVA transformer has iron loss of 150 Watts and full - load copper loss of 250 Watts. The maximum efficiency of the transformer would occur when the total loss is _______ W .

A 2 kVA transformer has iron loss of 150 Watts and full - load copper

1.	A 2 kVA transformer has iron loss of 150 Watts and full - load copper loss of 250 Watts. The maximum efficiency of the transformer would occur when the total loss is _______ W .
A.	3 W
B.	100 W
C.	30 W
D.	300 W
Answer» E.

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A 2 kVA transformer has iron loss of 150 Watts and full - load copper loss of 250 Watts. The maximum efficiency of the transformer would occur when the total loss is _______ W .

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