Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 0.85 V 1.7 V 1 V 0 V 0.85 V 1.7 V 1 V 0 V ANSWER DOWNLOAD EXAMIANS APP
Transformers If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is 2.5 W 250 W 25 W 0 W 2.5 W 250 W 25 W 0 W ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ Primary will draw large power Core losses will be excessive Primary reactance is too much increased None of the listed here Primary will draw large power Core losses will be excessive Primary reactance is too much increased None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers By laminating the core of a transformer, we decrease _____ Copper loss Eddy current loss Hysteresis loss Leakage reactance Copper loss Eddy current loss Hysteresis loss Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers A no-load test is performed on a transformer to determine magnetising current magnetising current and loss efficiency copper loss core loss magnetising current magnetising current and loss efficiency copper loss core loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as hum zoom buzz ringing hum zoom buzz ringing ANSWER DOWNLOAD EXAMIANS APP
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