A single phase 220/6 Volt, 50 Hz transfc has a rated primary current = 0.5 A. its maximum efficiency is at load current= and equal to 94% at unity p.f. Its efficie at rated load, 0.65 p.f. lagging is: 087.8%. 092.3%. 090.9%. O None.

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A single phase 220/6 Volt, 50 Hz transformer
has a rated primary current = 0.5 A. its
maximum efficiency is at load current = 15 A
and equal to 94% at unity p.f. Its efficiency
at rated load, 0.65 p.f. lagging is:
087.8%.
092.3%.
090.9%.
O None.
Transcribed Image Text:A single phase 220/6 Volt, 50 Hz transformer has a rated primary current = 0.5 A. its maximum efficiency is at load current = 15 A and equal to 94% at unity p.f. Its efficiency at rated load, 0.65 p.f. lagging is: 087.8%. 092.3%. 090.9%. O None.
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