Transformers Distribution transformers are generally designed for maximum efficiency around 50% load 90% load Zero load 25% load 50% load 90% load Zero load 25% load ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer will have zero efficiency at No load None of the listed here Half full load Full load No load None of the listed here Half full load Full load ANSWER DOWNLOAD EXAMIANS APP
Transformers In an auto transformer, the primary and secondary are _____ coupled. Only electrically Magnetically as well as electrically None of the listed here Only magnetically Only electrically Magnetically as well as electrically None of the listed here Only magnetically ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiencies of transformers compared with that of electric motors of the same power are about the same somewhat smaller much higher much smaller about the same somewhat smaller much higher much smaller ANSWER DOWNLOAD EXAMIANS APP
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 Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to one None of these great than one less than one approximately equal to one None of these great than one less than one ANSWER DOWNLOAD EXAMIANS APP
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