Mathematics · Transformers
Two identical 200 kVA, single-phase transformers undergo a Sumpner's test (back-to-back test). The total core loss from the supply line wattmeter W1 is 4 kW, and the total full-load copper loss from the secondary circuit wattmeter W2 is 6 kW. Determine the efficiency of each transformer at full load and unity power factor.
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