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The losses of a 30 kVA, 2000/200 V transformer are Iron losses: 360 W Full load copper losses: 480 W Calculate the efficiency at

The losses of a 30 kVA, 2000/200 V transformer are Iron losses: 360 W Full load copper losses: 480 W Calculate the efficiency at unity power factor for (i) full load and (ii) half load. Also determine the load for maximum efficiency; also compute the iron and copper losses for this maximum efficiency condition. (12)

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