Transformers Two things which are same for primary and secondary of transformer are ______ Ampere turns and voltage per turns Currents and induced voltages None of the listed here Resistance and leakage reactances Ampere turns and voltage per turns Currents and induced voltages None of the listed here Resistance and leakage reactances ANSWER DOWNLOAD EXAMIANS APP
Transformers An ideal transformer is one which _______ Has no losses and leakage reactance Has same number of primary and secondary turns Does not work None of the listed here Has no losses and leakage reactance Has same number of primary and secondary turns Does not work None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load primary current is about ______of full load primary current. 30-40% 3-5% Above 40% 15-30% 30-40% 3-5% Above 40% 15-30% ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as ringing buzz hum zoom ringing buzz hum zoom ANSWER DOWNLOAD EXAMIANS APP
Transformers Open circuit test on transformers is conducted to determine hysteresis losses copper losses eddy current losses core losses hysteresis losses copper losses eddy current losses core losses ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Magnetising current is greatly increased Hysteresis loss is decreased Eddy current is increased Reluctance of magnetic path is decreased Magnetising current is greatly increased Hysteresis loss is decreased Eddy current is increased Reluctance of magnetic path is decreased ANSWER DOWNLOAD EXAMIANS APP
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