Compute the efficiency of the transformer, Electrical Engineering

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Compute the efficiency of the transformer of Example corresponding to (a) full load, 0.8 power factor lagging, and (b) one-half load, 0.6 power factor lagging, given that the input power Poc in the open-circuit conducted at rated voltage is 173 W and the input power Psc in the short-circuit test conducted at rated current is 650 W.


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