Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. None of the listed here Increase Decrease Remain unchanged None of the listed here Increase Decrease Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can be started by All of the listed here Dc compound motor Pony motor Provinding damper winding All of the listed here Dc compound motor Pony motor Provinding damper winding ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The back e.m.f. of a synchronous motor depends on All of these load angle load speed All of these load angle load speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor connected to infinite bus-bars has at constant full load, 100% excitation and unity power factor. On changing the excitation only, the armature current will have leading power factor with over-excitation lagging power factor with over-excitation leading power factor with under-excitation no change of power factor leading power factor with over-excitation lagging power factor with over-excitation leading power factor with under-excitation no change of power factor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor which loss varies with load ? Core loss Bearing friction loss Windage loss Copper loss Core loss Bearing friction loss Windage loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor of synchronous motor is excited with direct current when the motor _____ Is at standstill Approches synchronous speed Approches half synchronous speed None of the listed here Is at standstill Approches synchronous speed Approches half synchronous speed None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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