Synchronous Motors A synchronous motor can operate at Lagging, leading and unity power factors Unity power factor only Leading power factor Lagging power factor only Lagging, leading and unity power factors Unity power factor only Leading power factor Lagging power factor only ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on an over-excited or under excited synchronous motor is increased, rate of change of its armature current as compared with that of power factor is more less equal twice more less equal twice ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The angle between the rotor poles and stator poles, in a synchronous motor, is known as Synchronising angle Angle of retardation Torque angle Power factor angle Synchronising angle Angle of retardation Torque angle Power factor angle ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The operating speed of a synchronous motor can be changed to new fixed value by using brakes changing the supply voltage changing the load changing frequency using brakes changing the supply voltage changing the load changing frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of a synchronous motor will be minimum for ______ power factor. 0.8 leading 0.8 lagging Unity None of the listed here 0.8 leading 0.8 lagging Unity None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Small synchronous motors are started by _______ Damper winding Pony motor None of the listed here Variable frequency source Damper winding Pony motor None of the listed here Variable frequency source ANSWER DOWNLOAD EXAMIANS APP
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