Synchronous Motors Power factor of a synchronous motor is unity when The armature current is minimum None of the listed here The armature current is maximum The armature current is zero The armature current is minimum None of the listed here The armature current is maximum The armature current is zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short circuit test on synchronous motor is usually about One second None of the listed here One hour One minute One second None of the listed here One hour One minute ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Most of the synchronous motors are _______ power factor metors. 0.8 lagging 0.8 leading Unity 0.5 leading 0.8 lagging 0.8 leading Unity 0.5 leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the field of a synchronous motor is underexcited, the power factor will be zero leading lagging unity zero leading lagging unity ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor delivers reactive power when ______ Over excited Normally excited None of the listed here Under excited Over excited Normally excited None of the listed here Under excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Dust and dirt accumulation on motor winding will result in Eddy current flow Shorting of coils Increased core losses Rise in winding temperature Eddy current flow Shorting of coils Increased core losses Rise in winding temperature ANSWER DOWNLOAD EXAMIANS APP
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