Determine the all-day efficiency of a 10 KVA 2220/220V 60 Hz transformer. During a day of 24 hours, it is loaded with unity power factor as under the following condition: 2 hours at five-fourths load; 6 hours at full load; 8 hours at half load; 4 hours at one-quarter load; 4 hours at no load. Take core loss as 153 W and full-load copper loss as 224 W.

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Determine the all-day efficiency of a 10 KVA 2220/220V 60 Hz
transformer. During a day of 24 hours, it is loaded with unity power factor as under
the following condition: 2 hours at five-fourths load; 6 hours at full load; 8 hours at
half load; 4 hours at one-quarter load; 4 hours at no load. Take core loss as 153 W and
full-load copper loss as 224 W.
Transcribed Image Text:Assignment Determine the all-day efficiency of a 10 KVA 2220/220V 60 Hz transformer. During a day of 24 hours, it is loaded with unity power factor as under the following condition: 2 hours at five-fourths load; 6 hours at full load; 8 hours at half load; 4 hours at one-quarter load; 4 hours at no load. Take core loss as 153 W and full-load copper loss as 224 W.
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