Transformers In case of 3-phase induction motors, plugging means interchanging two supply phases for quick stopping locking of rotor due to harmonics pulling the motor directly on line without a starter starting the motor on load which is more than the rated load interchanging two supply phases for quick stopping locking of rotor due to harmonics pulling the motor directly on line without a starter starting the motor on load which is more than the rated load ANSWER DOWNLOAD EXAMIANS APP
Transformers A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is 5 0.4 0.2 25 5 0.4 0.2 25 ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer, under heavy loads, is comparatively low because secondary output is much less as compared to primary input iron loss is increased considerably copper loss becomes high in proportion to the output voltage drop both in primary and secondary becomes large secondary output is much less as compared to primary input iron loss is increased considerably copper loss becomes high in proportion to the output voltage drop both in primary and secondary becomes large ANSWER DOWNLOAD EXAMIANS APP
Transformers Short circuit test on transformers is conducted to determine eddy current losses copper losses hysteresis losses core losses eddy current losses copper losses hysteresis losses core losses ANSWER DOWNLOAD EXAMIANS APP
Transformers Which motor is preferred for use in mines where explosive gases exist? Induction motor Air motor Synchronous motor Shunt motor Induction motor Air motor Synchronous motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
Transformers In an auto transformer, the primary and secondary are _____ coupled. 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 Only electrically ANSWER DOWNLOAD EXAMIANS APP
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