Transformers If a power transformer is operated at very high frequencies, then ______ Primary reactance is too much increased Core losses will be excessive None of the listed here Primary will draw large power Primary reactance is too much increased Core losses will be excessive None of the listed here Primary will draw large power 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 interchanging two supply phases for quick stopping pulling the motor directly on line without a starter starting the motor on load which is more than the rated load locking of rotor due to harmonics interchanging two supply phases for quick stopping pulling the motor directly on line without a starter ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same efficiency same kVA rating same number of turns on the secondary side. same polarity same efficiency same kVA rating same number of turns on the secondary side. same polarity ANSWER DOWNLOAD EXAMIANS APP
Transformers In an auto transformer, the primary and secondary are _____ coupled. Only electrically Only magnetically Magnetically as well as electrically None of the listed here Only electrically Only magnetically Magnetically as well as electrically None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers We can find _______of the transformer with open circuit test. Total equivalent resistance Total equivalent leakage reactance Turn ratio Copper losses Total equivalent resistance Total equivalent leakage reactance Turn ratio Copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has High silicon content Low hysteresis loss High permeability All of the listed here High silicon content Low hysteresis loss High permeability All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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