Synchronous Motors The duration of sudden short-circuit test on a synchronous motor is usually about one minute None of these one hour one second one minute None of these one hour one second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the magnitude of stator back emf depends on _____ Both the speed and rotor flux Speed of the rotor Load on the motor Dc excitation only Both the speed and rotor flux Speed of the rotor Load on the motor Dc excitation only ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The construction of a synchronous motor ressembles An alternator An induction motor A rotary converter A series motor An alternator An induction motor A rotary converter A series motor 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 rotor of synchronous motor is excited with direct current when the motor _____ Is at standstill Approches synchronous speed None of the listed here Approches half synchronous speed Is at standstill Approches synchronous speed None of the listed here Approches half synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the maximum power developed depends on all of the following except rotor excitation direction of rotation maximum value of coupling angle supply voltage rotor excitation direction of rotation maximum value of coupling angle supply voltage ANSWER DOWNLOAD EXAMIANS APP
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