Find the transformer ratio

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Reference no: EM131359399

A three phase transformer delivers a load of 66 MW at 0.8 p.f. lagging and 138 KV (line-to-line). The primary voltage under these conditions is 14.34 KV (line-to-line), the apparent power is 86 MVA and the power factor is 0.78 lagging .

A. Find the transformer ratio.

B. Find the series impedance representation of the transformer.

C. Find the primary voltage when the load is 75 MVA at 0.7 p.f. lagging at a voltage of 138 KV.

Reference no: EM131359399

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