Synchronous Motors For power factor correction, synchronous motors operate at normal load with minimum excitation normal load with zero excitation no-load and under-excited fields no-load and greatly over-excited fields normal load with minimum excitation normal load with zero excitation no-load and under-excited fields no-load and greatly over-excited fields ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the rotor copper loss are met by ______ Supply lines Dc source Motor input Armature input Supply lines Dc source Motor input Armature input ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The back e.m.f. of a synchronous motor depends on All of these load angle speed load All of these load angle speed load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The power factor correction capability of a loaded synchronous motor _____ with the increases in mechanical load. None of the listed here Decreases Increases Remains unchanged None of the listed here Decreases Increases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor is generally ______ times its full-load torque. 5 to 10 1.25 to 3.5 6 to 9 0.5 5 to 10 1.25 to 3.5 6 to 9 0.5 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short circuit test on synchronous motor is usually about One minute One hour None of the listed here One second One minute One hour None of the listed here One second ANSWER DOWNLOAD EXAMIANS APP
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