Synchronous Motors The speed of a synchronous motor None of the listed here Increases as the load increases Decreases as the load decreases Always remains constant None of the listed here Increases as the load increases Decreases as the load decreases Always remains constant ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can be started by All of the listed here Provinding damper winding Pony motor Dc compound motor All of the listed here Provinding damper winding Pony motor Dc compound motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the forced vibrations will be maximum when driving A reciprocating air compressor A centrifugal pump Any of the listed here A centrifugal blower A reciprocating air compressor A centrifugal pump Any of the listed here A centrifugal blower ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Dust and dirt accumulation on motor winding will result in Shorting of coils Increased core losses Eddy current flow Rise in winding temperature Shorting of coils Increased core losses Eddy current flow Rise in winding temperature ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The power factor of a synchronous motor is better than that of induction motor because synchronous motor runs at synchronous speed mechanical load on the motor can be adjusted stator supply is relieved of responsibility of producing magnetic field synchronous motor has large air gap synchronous motor runs at synchronous speed mechanical load on the motor can be adjusted stator supply is relieved of responsibility of producing magnetic field synchronous motor has large air gap 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 leading power factor with under-excitation no change of power factor lagging power factor with over-excitation leading power factor with over-excitation leading power factor with under-excitation no change of power factor lagging power factor with over-excitation ANSWER DOWNLOAD EXAMIANS APP
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