Synchronous Motors Small synchronous motors are started by _______ Pony motor Damper winding None of the listed here Variable frequency source Pony motor Damper winding None of the listed here Variable frequency source ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of a synchronous motor will be minimum for ______ power factor. Unity None of the listed here 0.8 lagging 0.8 leading Unity None of the listed here 0.8 lagging 0.8 leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short-circuit test on a synchronous motor is usually about None of these one minute one hour one second None of these one minute one hour one second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Synchronous motor always run at The synchronous speed More than synchronous speed None of the listed here Less than synchronous speed The synchronous speed More than synchronous speed None of the listed here Less than synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor connected to infinite bus-bars has at constant full load, 100% excitation and unity power factor. On changing the excitation only, the armature current will have no change of power factor leading power factor with under-excitation lagging power factor with over-excitation leading power factor with over-excitation no change of power factor leading power factor with under-excitation lagging power factor with over-excitation leading power factor with over-excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed regulation of a synchronous motor is always Zero Positive 0.5% 1% Zero Positive 0.5% 1% ANSWER DOWNLOAD EXAMIANS APP
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