A 2400/240 V, 200 kVA single-phase transformer has a core loss of 1.8 kW at rated voltage. Its equivalent resistance is 1.1 percent. Then, the transformer efficiency at 0.9 pf and on full-load is

A 2400/240 V, 200 kVA single-phase transformer has a core loss of 1.8

1.	A 2400/240 V, 200 kVA single-phase transformer has a core loss of 1.8 kW at rated voltage. Its equivalent resistance is 1.1 percent. Then, the transformer efficiency at 0.9 pf and on full-load is
A.	97.57%
B.	98.05%
C.	97.82%
D.	96.56%
Answer» D. 96.56%

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A 2400/240 V, 200 kVA single-phase transformer has a core loss of 1.8 kW at rated voltage. Its equivalent resistance is 1.1 percent. Then, the transformer efficiency at 0.9 pf and on full-load is

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