Synchronous Motors The induced e.m.f. in a synchronous motor working on leading power factor will be more than the supply voltage less than the supply voltage None of these equal to the supply voltage more than the supply voltage less than the supply voltage None of these equal to the supply voltage ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The magnitude of field flux in a 3-phase synchronous motor Varies with speed Varies with the load Remains constant at all loads Varies with power factor Varies with speed Varies with the load Remains constant at all loads Varies with power factor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The operating speed of a synchronous motor can be changed to new fixed value by changing frequency changing the supply voltage changing the load using brakes changing frequency changing the supply voltage changing the load using brakes ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 90° 120° 45° 60° 90° 120° 45° 60° 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 back e.m.f. will be more than the supply voltage the stator current will be very high the stator current will be very small the stator current will be zero the back e.m.f. will be more than the supply voltage the stator current will be very high the stator current will be very small ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The size of a synchronous motor is determined by its _____ kVA rating kVAR rating None of the listed here kW rating kVA rating kVAR rating None of the listed here kW rating ANSWER DOWNLOAD EXAMIANS APP
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