Transformers The no load primary current is about ______of full load primary current. Above 40% 30-40% 3-5% 15-30% Above 40% 30-40% 3-5% 15-30% ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because it _______ Uses capacitive coupling Uses electric coupling Is a static device Uses inductive coupling Uses capacitive coupling Uses electric coupling Is a static device Uses inductive coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer is always made on ______ Low voltage winding Either low or high voltage winding High voltage winding None of the listed here Low voltage winding Either low or high voltage winding High voltage winding None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary leakage flux links _____ Secondary winding only None of the listed here Primary winding only Both primary and secondary windings Secondary winding only None of the listed here Primary winding only Both primary and secondary windings ANSWER DOWNLOAD EXAMIANS APP
Transformers In case of 3-phase induction motors, plugging means starting the motor on load which is more than the rated load locking of rotor due to harmonics pulling the motor directly on line without a starter interchanging two supply phases for quick stopping starting the motor on load which is more than the rated load locking of rotor due to harmonics pulling the motor directly on line without a starter interchanging two supply phases for quick stopping ANSWER DOWNLOAD EXAMIANS APP
Transformers Harmonics in transformer result in magnetic interference with communication circuits increased core losses increased I2R losses All of the listed here magnetic interference with communication circuits increased core losses increased I2R losses All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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