Synchronous Motors Power factor of a synchronous motor is unity when The armature current is maximum The armature current is zero None of the listed here The armature current is minimum The armature current is maximum The armature current is zero None of the listed here The armature current is minimum ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Leading power factor synchronous motors cost ______ the unity pf motors. About the same as None of the listed here Less than More than About the same as None of the listed here Less than More than ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Slip rings in a synchronous motor carry All of the listed here No current Direct current Alternating current All of the listed here No current Direct current Alternating current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A 50 Hz synchronous motor runs at 200 rpm. The number of salient poles on the rotor are______ None of the listed here 36 16 30 None of the listed here 36 16 30 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is on no load, the torque angle is about ________ 90° electrical 0° electrical 30° electrical 45° electrical 90° electrical 0° electrical 30° electrical 45° electrical ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The back emf in the stator of a synchronous motor depends on Rotor speed Flux density Rotor excitation None of the listed here Rotor speed Flux density Rotor excitation None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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