### Determine the efficiency when the transformer delivers load

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##### Reference no: EM13274322

A 3-kVA, 220:110-V, 60-Hz single-phase transformer yields this test data

open-circuit test: 200 V, 1.4 A, 50 W

short-Circuit test: 4.5 V, 13.64 A, 30 W

Determine the efficiency when the transformer delivers a load of 2 kVA at 0.85 power factor lagging.

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