Transformers In case of 3-phase induction motors, plugging means locking of rotor due to harmonics pulling the motor directly on line without a starter starting the motor on load which is more than the rated load interchanging two supply phases for quick stopping locking of rotor due to harmonics pulling the motor directly on line without a starter starting the motor on load which is more than the rated load interchanging two supply phases for quick stopping ANSWER DOWNLOAD EXAMIANS APP
Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Current transformer Potential transformer Auto transformer Step-up transformer Current transformer Potential transformer Auto transformer Step-up transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ None of the listed here Core losses will be excessive Primary reactance is too much increased Primary will draw large power None of the listed here Core losses will be excessive Primary reactance is too much increased Primary will draw large power ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as buzz zoom ringing hum buzz zoom ringing hum ANSWER DOWNLOAD EXAMIANS APP
Transformers In the short circuit test on a transformer, we generally short circuit ______ None of the listed here High voltage winding Low voltage winding Either low or high voltage winding None of the listed here High voltage winding Low voltage winding Either low or high voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary winding of a power transformer should always be shorted fused open switched shorted fused open switched ANSWER DOWNLOAD EXAMIANS APP
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