Synchronous Motors Slip rings in a synchronous motor carry Direct current Alternating current No current All of the listed here Direct current Alternating current No current All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Damper winding in a synchronous motor________ Reduces windage losses Improve pf of the motor Increases hunting of the motor Serves to start the motor Reduces windage losses Improve pf of the motor Increases hunting of the motor Serves to start the motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous machine with large air gap has a higher value of stability limit a higher synchronizing power which makes the machine less sensitive to load variations all of the listed here a small value of inherent regulation a higher value of stability limit a higher synchronizing power which makes the machine less sensitive to load variations all of the listed here a small value of inherent regulation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Change of D.C. excitation of a synchronous motor changes Applied voltage of the motor Motor speed Any of the above Power factor of power drawn by the motor Applied voltage of the motor Motor speed Any of the above Power factor of power drawn by the motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor which loss varies with load ? Windage loss Core loss Bearing friction loss Copper loss Windage loss Core loss Bearing friction loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a unity pf synchronous motor is operated at a leading pf, it results in _______ Less than rated horsepower output More than rated rotor current None of the listed here More than rated horseppwer output Less than rated horsepower output More than rated rotor current None of the listed here More than rated horseppwer output ANSWER DOWNLOAD EXAMIANS APP
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