Transformers The approximate efficiency of a large transformer is 50% 95% 65% 80% 50% 95% 65% 80% ANSWER DOWNLOAD EXAMIANS APP
Transformers Which winding in a transformer has more number of turns? Low voltage winding High voltage winding Secondary winding Primary winding Low voltage winding High voltage winding Secondary winding Primary winding ANSWER DOWNLOAD EXAMIANS APP
Transformers The voltage transformation ratio of a transformer is equal to the ratio of secondary current to primary current secondary induced e.m.f. to primary induced e.m.f. secondary terminal voltage to primary applied voltage primary turns to secondary turns secondary current to primary current secondary induced e.m.f. to primary induced e.m.f. secondary terminal voltage to primary applied voltage primary turns to secondary turns ANSWER DOWNLOAD EXAMIANS APP
Transformers When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is 240 V 120 V 12 V 2,400 V 240 V 120 V 12 V 2,400 V ANSWER DOWNLOAD EXAMIANS APP
Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Step-up transformer Current transformer Auto transformer Potential transformer Step-up transformer Current transformer Auto transformer Potential transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers When load on a transformer is increased, the eddy current _____ None of the listed here Is decreased Remains unchanged Is increased None of the listed here Is decreased Remains unchanged Is increased ANSWER DOWNLOAD EXAMIANS APP
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