Transformers An open-circuit test on a transformer is conducted primarily to measure insulation resistance core loss total loss copper loss insulation resistance core loss total loss copper loss ANSWER DOWNLOAD EXAMIANS APP
Transformers Losses which occur in rotating electric machines and do not occur in trans formers are friction and windage losses hysteresis and eddy current losses copper losses magnetic losses friction and windage losses hysteresis and eddy current losses copper losses magnetic losses ANSWER DOWNLOAD EXAMIANS APP
Transformers An ideal transformer is one which _______ Does not work Has no losses and leakage reactance None of the listed here Has same number of primary and secondary turns Does not work Has no losses and leakage reactance None of the listed here Has same number of primary and secondary turns ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Air blast cooling Oil cooling Any of the listed here Natural air cooling Air blast cooling Oil cooling Any of the listed here Natural air cooling ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer transfers electrical energy from primary to secondary usually with a change in ______ Voltage Power Time period Frequency Voltage Power Time period Frequency ANSWER DOWNLOAD EXAMIANS APP
Transformers The temperature rise of transformer is directly proportional to _______ Apparent power Leakage reactance Reactive power None of the listed here Apparent power Leakage reactance Reactive power None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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