Synchronous Motors A synchronous motor can be used as a synchronous capacitor when it is Under excited Over loaded Over excited Under loaded Under excited Over loaded Over excited Under loaded ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a 3-phase synchronous motor, the negative phase sequence exists when the motor is supplied with unbalanced voltage None of these over-loaded under-loaded supplied with unbalanced voltage None of these over-loaded under-loaded ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The angle between the rotor poles and stator poles, in a synchronous motor, is known as Torque angle Angle of retardation Synchronising angle Power factor angle Torque angle Angle of retardation Synchronising angle Power factor angle ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In case one phase of a three-phase synchronous motor is short-circuited the motor will run with excessive vibrations run at 2/3 of synchronous speed not start take less than the rated load run with excessive vibrations run at 2/3 of synchronous speed not start take less than the rated load 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-up torque None of these pull-in torque pull-out torque pull-up torque None of these pull-in torque pull-out torque ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If one phase of a 3 phase synchronous motor is short circuited, motor Will not come upto speed Will fail to pull into step Will refused ro start Will overheat in spots Will not come upto speed Will fail to pull into step Will refused ro start Will overheat in spots ANSWER DOWNLOAD EXAMIANS APP
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