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Tests are performed on a single-phase, 10 kVA, 2200/220 V, 60 Hz transformer and the following results are obtained. Open Circuit Test (high voltage

Tests are performed on a single-phase, 10 kVA, 2200/220 V, 60 Hz transformer and the following results are

Tests are performed on a single-phase, 10 kVA, 2200/220 V, 60 Hz transformer and the following results are obtained. Open Circuit Test (high voltage side open) Voltmeter Ammeter Wattmeter 220 V 2.5 A 100 W Short-Circuit Test (low-voltage side shorted) 150 V 4.55 A 215 W (a) Derive the parameters for the approximate equivalent circuits referred to the low- voltage side and the high-voltage side. (b) Express the excitation current as a percentage of the rated current. (c) Determine the power factor for the no-load and short-circuit tests.

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