Synchronous Motors A synchronous motor with large air gap has A small value of inherent regulation All of the listed here A higher synchronizing power which makes the machine less sensitive to load variations A higher value of stability limit A small value of inherent regulation All of the listed here A higher synchronizing power which makes the machine less sensitive to load variations A higher value of stability limit ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the synchronous motor, properly synchronised to the supply is running on no load and is having negligible loss then the stator current will be zero the stator current will be very high the stator current will be very small the back e.m.f. will be more than the supply voltage the stator current will be zero the stator current will be very high the stator current will be very small the back e.m.f. will be more than the supply voltage ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Dust and dirt accumulation on motor winding will result in Eddy current flow Increased core losses Shorting of coils Rise in winding temperature Eddy current flow Increased core losses Shorting of coils Rise in winding temperature ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 99 to 99.5% 60 to 70% 85 to 95% 75 to 80% 99 to 99.5% 60 to 70% 85 to 95% 75 to 80% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can develop synchronous torque below or above synchronous speed while over-excited when under loaded only at synchronous speed below or above synchronous speed while over-excited when under loaded only at synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Slip rings in a synchronous motor carry No current Direct current All of the listed here Alternating current No current Direct current All of the listed here Alternating current ANSWER DOWNLOAD EXAMIANS APP
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