Synchronous Motors A synchronous motor can be made self starting by providing Damper winding on rotor poles Damper winding on stator Damper winding on stator as well as rotor poles None of the listed here Damper winding on rotor poles Damper winding on stator Damper winding on stator as well as rotor poles None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can be used as a synchronous capacitor when it is Under loaded Under excited Over loaded Over excited Under loaded Under excited Over loaded Over excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors By which of the following methods the constant speed of a synchronous motor can be changed to new fixed value ? By interchanging any two phases By changing the applied voltage By changing the supply frequency By changing the load By interchanging any two phases By changing the applied voltage By changing the supply frequency By changing the load 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 equal twice less more equal twice less more ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can operate at Lagging power factor only 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 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The standard full-load power factor ratings for synchronous motors are zero or 0.8 leading unity or 0.8 lagging unity or zero unity or 0.8 leading zero or 0.8 leading unity or 0.8 lagging unity or zero unity or 0.8 leading ANSWER DOWNLOAD EXAMIANS APP
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