The efficiency of a 400-kva single-phase 60-hz transformer, Chemical Engineering

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The efficiency of a 400-kva single-phase 60-hz transformer

The efficiency of a 400-kVA, single-phase, 60-Hz transformer is 98.77% when delivering full-load current at 0.8 power factor, and 99.13% with half rated current at unity power factor. Calculate:

(a) The iron loss.

(b) The full-load copper loss.

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Chemical Engineering: The efficiency of a 400-kva single-phase 60-hz transformer

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Chemical Engineering: The efficiency of a 400-kva single-phase 60-hz transformer

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