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The efficiency of a 1000 kVA, 110/220 V, 50 Hz, single-phase transformer is 98.5% at half full-load at 0.8 pf leading and 98.8% at full-load upf.
Determine:
(a) iron-loss,
(b) full-load copperloss, and
(c) maximum efficiency at upf.
Electrical & Electronics, Engineering
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