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If current is not obtained from secondary coil of an ideal transformer, then the power factor of primary coil of transformer is ......... |
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Answer» 0 `lt P gt =V_(rms) I_(rms) cos delta` but power is not obtained in secondary coil `therefore` In 0 = `V_(rms) I_(rms) cos delta, V_(rms) ne 0 , I_(rms) ne 0` `therefore cos delta=0` `therefore delta=pi/2` and power REMAIN same in an ideal transformer . `therefore cos delta=0`, which is power factor. |
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