Transformers If a transformer core has air gaps, then, _________ Reluctance of magnetic path is decreased Eddy current is increased Hysteresis loss is decreased Magnetising current is greatly increased Reluctance of magnetic path is decreased Eddy current is increased Hysteresis loss is decreased Magnetising current is greatly increased ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same polarity same number of turns on the secondary side. same efficiency same kVA rating same polarity same number of turns on the secondary side. same efficiency same kVA rating ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 65% 80% 95% 50% 65% 80% 95% 50% ANSWER DOWNLOAD EXAMIANS APP
Transformers Two things which are same for primary and secondary of transformer are ______ None of the listed here Resistance and leakage reactances Currents and induced voltages Ampere turns and voltage per turns None of the listed here Resistance and leakage reactances Currents and induced voltages Ampere turns and voltage per turns ANSWER DOWNLOAD EXAMIANS APP
Transformers When the secondary of a transformer is short circuited, the primary inductance _______ Remians unchanged Is decreased Is increased None of the listed here Remians unchanged Is decreased Is increased None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers How many primary volts must be applied to a transformer with a turns ratio of 0.1 to obtain a secondary voltage of 9 V? 0.9 V 9 V 900 V 90 V 0.9 V 9 V 900 V 90 V ANSWER DOWNLOAD EXAMIANS APP
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