Transformers A transformer operates poorly at very low frequencies because _____ None of the listed here Permeability of core is increased Magnetising current is abnormally high Primary reactance is too much increased None of the listed here Permeability of core is increased Magnetising current is abnormally high Primary reactance is too much increased ANSWER DOWNLOAD EXAMIANS APP
Transformers In case of 3-phase induction motors, plugging means pulling the motor directly on line without a starter locking of rotor due to harmonics starting the motor on load which is more than the rated load interchanging two supply phases for quick stopping pulling the motor directly on line without a starter locking of rotor due to harmonics starting the motor on load which is more than the rated load interchanging two supply phases for quick stopping ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer oil must be free from Sludge Moisture Odour Gases Sludge Moisture Odour Gases ANSWER DOWNLOAD EXAMIANS APP
Transformers The principle of working of transformer is Static induction Dynamic induction Mutual induction Self induction Static induction Dynamic induction Mutual induction Self induction ANSWER DOWNLOAD EXAMIANS APP
Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Step-up transformer Potential transformer Auto transformer Current transformer Step-up transformer Potential transformer Auto transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The temperature rise of transformer is directly proportional to _______ Apparent power Reactive power None of the listed here Leakage reactance Apparent power Reactive power None of the listed here Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
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