Electrical Engineering · Transformers
For a single-phase transformer, the wattmeter readings for the open-circuit (OC) and short-circuit (SC) tests are as follows: Wattmeter reading in OC test = 2.5 kW Wattmeter reading in SC test at full load = 5 kW Find the efficiency of this 5 kVA transformer when operating at full load with a unity power factor.
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