Synchronous Motors In a 3-phase synchronous motor, the negative phase sequence exists when the motor is None of these under-loaded over-loaded supplied with unbalanced voltage None of these under-loaded over-loaded supplied with unbalanced voltage ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When pull-out torque occurs in a synchronous motor, the poles of the rotor are _______ Coincident with statorbpoles Mid way between N and S poles of stator None of the listed here 45° (electrical) behind stator poles Coincident with statorbpoles Mid way between N and S poles of stator None of the listed here 45° (electrical) behind stator poles ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Small synchronous motors are started by _______ Damper winding Pony motor Variable frequency source None of the listed here Damper winding Pony motor Variable frequency source None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Power factor of a synchronous motor is unity when The armature current is minimum The armature current is zero The armature current is maximum None of the listed here The armature current is minimum The armature current is zero The armature current is maximum None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the forced vibrations will be maximum when driving A centrifugal pump A reciprocating air compressor A centrifugal blower Any of the listed here A centrifugal pump A reciprocating air compressor A centrifugal blower Any of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a practical synchronous motor will occur when the torque angle is about _____ 45° 30° 75° 0° 45° 30° 75° 0° ANSWER DOWNLOAD EXAMIANS APP
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