Synchronous Motors An under excited synchronous motor behaves as_______ A capacitor An inductor A resistor None of the listed here A capacitor An inductor A resistor None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor runs at only one speed because it ______ Is a doubly fed machine Has a damper winding None of the listed here Has no losses Is a doubly fed machine Has a damper winding None of the listed here Has no losses ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor working at leading power factor can be used as Voltage booster Noise generator Phase advancer Mechanical synchronizer Voltage booster Noise generator Phase advancer Mechanical synchronizer 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 supply frequency By changing the applied voltage By changing the load By interchanging any two phases By changing the supply frequency By changing the applied voltage By changing the load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 85 to 95% 75 to 80% 60 to 70% 99 to 99.5% 85 to 95% 75 to 80% 60 to 70% 99 to 99.5% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can be made self starting by providing Damper winding on stator Damper winding on rotor poles Damper winding on stator as well as rotor poles None of the listed here Damper winding on stator Damper winding on rotor poles Damper winding on stator as well as rotor poles None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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