Synchronous Motors In a synchronous motor it the back e.m.f. generated in the armature at noload is approximately equal to the applied voltage, then the excitation is said to be hundred per cent the torque generated is maximum the motor is said to be fully loaded the excitation is said to be zero per cent the excitation is said to be hundred per cent the torque generated is maximum the motor is said to be fully loaded the excitation is said to be zero per cent ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor of synchronous motor is excited with direct current when the motor _____ Approches half synchronous speed Is at standstill None of the listed here Approches synchronous speed Approches half synchronous speed Is at standstill None of the listed here Approches synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The back emf in the stator of a synchronous motor depends on Rotor excitation None of the listed here Rotor speed Flux density Rotor excitation None of the listed here Rotor speed Flux density ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then it runs at a slower speed the motor stops it continues to run at the same speed it runs at a very high speed it runs at a slower speed the motor stops it continues to run at the same speed it runs at a very high speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A three phase synchronous motor will have Three slip rings Two slip rings No slip rings One slip rings Three slip rings Two slip rings No slip rings One slip rings ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Most of the synchronous motors are _______ power factor metors. 0.5 leading Unity 0.8 leading 0.8 lagging 0.5 leading Unity 0.8 leading 0.8 lagging ANSWER DOWNLOAD EXAMIANS APP
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