Synchronous Motors If the field of a synchronous motor is underexcited, the power factor will be leading zero unity lagging leading zero unity lagging ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Mostly, synchronous motors are of Salient pole type machines Induction type machines Alternator type machines Smooth cylindrical type machines Salient pole type machines Induction type machines Alternator type machines Smooth cylindrical type machines ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The power factor of a synchronous motor is better than that of induction motor because synchronous motor runs at synchronous speed stator supply is relieved of responsibility of producing magnetic field synchronous motor has large air gap mechanical load on the motor can be adjusted synchronous motor runs at synchronous speed stator supply is relieved of responsibility of producing magnetic field synchronous motor has large air gap mechanical load on the motor can be adjusted ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on a synchronous motor is increased, its armature current is increased provided, it is ______ Over-excited All of these Normally excited Under-excited Over-excited All of these Normally excited Under-excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as pull-out torque pull-up torque None of these pull-in torque pull-out torque pull-up torque None of these pull-in torque ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum speed variation in a 3 phase synchronous motor is 4 percent 10 percent 2 percent Zero 4 percent 10 percent 2 percent Zero ANSWER DOWNLOAD EXAMIANS APP
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