Electrical Engineering > GATE 2013 SET-1 > Transformers
A single-phase transformer has no-load loss of 64 W. With 90% of rated current during a short-circuit test, the measured loss is 81 W. The transformer has maximum efficiency when operated at
A
50.0% of the rated current
B
64.0% of the rated current
C
80.0% of the rated current
D
88.8% of the rated current

Explanation

Correct :

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