Synchronous Motors The back emf in the stator of a synchronous motor depends on Flux density None of the listed here Rotor excitation Rotor speed Flux density None of the listed here Rotor excitation Rotor speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a 3-phase synchronous motor, the negative phase sequence exists when the motor is None of these under-loaded supplied with unbalanced voltage over-loaded None of these under-loaded supplied with unbalanced voltage over-loaded ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors For reciprocating compressor, the synchronous motor is designed to have pull in torque of about ______ times the full load torque. 5 2 0.5 6 5 2 0.5 6 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can operate at Unity power factor only Lagging power factor only Leading power factor Lagging, leading and unity power factors Unity power factor only Lagging power factor only Leading power factor Lagging, leading and unity power factors 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 back e.m.f. will be more than the supply voltage the stator current will be very high the stator current will be zero the stator current will be very small the back e.m.f. will be more than the supply voltage the stator current will be very high the stator current will be zero the stator current will be very small ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is pulled out of synchronism, the stator current ________ Become zero Is decreased too much Remains unchanged Is increased too much Become zero Is decreased too much Remains unchanged Is increased too much ANSWER DOWNLOAD EXAMIANS APP
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