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please I need the answer in details and thank you Q6. Tests are performed on a...

please I need the answer in details and thank you


Q6. Tests are performed on a single phase transformer, 10 kVA, 2200/220 V, 60 Hz transformer and the following results
are obtained.
Open-circuit test 220 V, 2.50 A, 1 00 W
Short-circuit test 150 V, 4.55 A, 215 W
Determine:
(a) Efficiency at 75% rated output and 0.6 PF.
(b) Power output at maximum efficiency and the value of maximum efficiency. At what percent of
full load does this maximum efficiency occur?

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