Transformers Sumpner's test is conducted on transformers to determine all-day efficiency temperature None of these stray losses all-day efficiency temperature None of these stray losses ANSWER DOWNLOAD EXAMIANS APP
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 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 starting the motor on load which is more than the rated load 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 The steel used for transformer core has High silicon content All of the listed here Low hysteresis loss High permeability High silicon content All of the listed here Low hysteresis loss High permeability ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 80% 95% 65% 50% 80% 95% 65% 50% ANSWER DOWNLOAD EXAMIANS APP
Transformers The hum in a transformer is mainly attributed to magnetostriction mechanical vibrations load changes oil in the transformer magnetostriction mechanical vibrations load changes oil in the transformer ANSWER DOWNLOAD EXAMIANS APP
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