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 less twice equal more less twice equal more ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The size of a synchronous motor is determined by its _____ kVAR rating None of the listed here kVA rating kW rating kVAR rating None of the listed here kVA rating kW rating ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Most of the synchronous motors are _______ power factor metors. 0.8 leading 0.5 leading Unity 0.8 lagging 0.8 leading 0.5 leading Unity 0.8 lagging ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 99 to 99.5% 85 to 95% 60 to 70% 75 to 80% 99 to 99.5% 85 to 95% 60 to 70% 75 to 80% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor None of the listed here Always remains constant Decreases as the load decreases Increases as the load increases None of the listed here Always remains constant Decreases as the load decreases Increases as the load increases ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor runs at only one speed because it ______ 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 Is a doubly fed machine ANSWER DOWNLOAD EXAMIANS APP
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