Synchronous Motors The duration of sudden short-circuit test on a synchronous motor is usually about one minute one second one hour None of these one minute one second one hour None of these 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 None of these pull-up torque pull-in torque pull-out torque None of these pull-up torque pull-in torque pull-out torque 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. 2 6 0.5 5 2 6 0.5 5 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor runs at only one speed because it ______ None of the listed here Has no losses Has a damper winding Is a doubly fed machine None of the listed here Has no losses Has a damper winding Is a doubly fed machine ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor copper losses, in a synchronous motor, are met by c. source supply lines motor input armature input c. source supply lines motor input armature input ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor cannot be due to windage friction variable frequency variable load variable supply voltage windage friction variable frequency variable load variable supply voltage ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS