Synchronous Motors A synchronous motor will always stop when Supply voltage frequency changes Supply voltage fluctuates Excitation winding gets disconnected Load in motor varies Supply voltage frequency changes Supply voltage fluctuates Excitation winding gets disconnected Load in motor varies ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the field of a synchronous motor is under-excited, the power factor will be unity leading lagging zero unity leading lagging zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The size of a synchronous motor decreases with the increase in Flux density Speed Horse power rating All of the listed here Flux density Speed Horse power rating All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous machine with low value of short-circuit ratio has high stability limit good speed regulation good voltage regulation lower stability limit high stability limit good speed regulation good voltage regulation lower stability limit ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor is generally ______ times its full-load torque. 6 to 9 0.5 1.25 to 3.5 5 to 10 6 to 9 0.5 1.25 to 3.5 5 to 10 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor 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 None of the listed here Increases as the load increases ANSWER DOWNLOAD EXAMIANS APP
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