Transformers In case of 3-phase induction motors, plugging means locking of rotor due to harmonics interchanging two supply phases for quick stopping starting the motor on load which is more than the rated load pulling the motor directly on line without a starter locking of rotor due to harmonics interchanging two supply phases for quick stopping starting the motor on load which is more than the rated load pulling the motor directly on line without a starter ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Current transformer Power transformer Auto transformer Voltage transformer Current transformer Power transformer Auto transformer Voltage transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise resulting from vibrations of laminations set by magnetic forces, is termed as Magnetostriction Boo Zoom Hum Magnetostriction Boo Zoom Hum ANSWER DOWNLOAD EXAMIANS APP
Transformers Leakage flux in a transformer occurs because Air is not a good magnetic insulator Iron core has high permeability Transformer is not an efficient device Applied voltage is sinusoidal Air is not a good magnetic insulator Iron core has high permeability Transformer is not an efficient device Applied voltage is sinusoidal 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 maximum efficiency of a distribution transformer is at 80% full load at 50% full load at full load at no load at 80% full load at 50% full load at full load at no load ANSWER DOWNLOAD EXAMIANS APP
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