Synchronous Motors In a synchronous motor, the magnitude of stator back emf depends on _____ Dc excitation only Load on the motor Speed of the rotor Both the speed and rotor flux Dc excitation only Load on the motor Speed of the rotor Both the speed and rotor flux ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Slip rings in a synchronous motor carry No current All of the listed here Alternating current Direct current No current All of the listed here Alternating current Direct current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors For the same active power consumed, the stator current of a synchronous motor is ______ that of a 3 phase induction motor. More than Less than The same as None of the listed here More than Less than The same as None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The magnitude of field flux in a 3-phase synchronous motor Varies with power factor Remains constant at all loads Varies with speed Varies with the load Varies with power factor Remains constant at all loads Varies with speed Varies with the 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 pull-in torque None of these pull-out torque pull-up torque pull-in torque None of these pull-out torque ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Synchronous motors are generally used in application requiring _______ Frequent stopping Sudden application of heavy loads Infrequent starting Variable speed Frequent stopping Sudden application of heavy loads Infrequent starting Variable speed ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS