Synchronous Motors In case one phase of a three-phase synchronous motor is short-circuited the motor will run at 2/3 of synchronous speed take less than the rated load run with excessive vibrations not start run at 2/3 of synchronous speed take less than the rated load run with excessive vibrations not start ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor which loss varies with load ? Bearing friction loss Core loss Windage loss Copper loss Bearing friction loss Core loss Windage loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor copper losses, in a synchronous motor, are met by motor input supply lines c. source armature input motor input supply lines c. source armature input ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Leading power factor synchronous motors cost ______ the unity pf motors. More than Less than None of the listed here About the same as More than Less than None of the listed here About the same as ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor working at leading power factor can be used as Noise generator Phase advancer Mechanical synchronizer Voltage booster Noise generator Phase advancer Mechanical synchronizer Voltage booster ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a 3-phase synchronous motor, the negative phase sequence exists when the motor is over-loaded supplied with unbalanced voltage None of these under-loaded over-loaded supplied with unbalanced voltage None of these under-loaded ANSWER DOWNLOAD EXAMIANS APP
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