Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ Reduce dc field excitation to zero None of the listed here Change supply frequency Interchange any two stator lines Reduce dc field excitation to zero None of the listed here Change supply frequency Interchange any two stator lines ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A rotary converter can also be run as a Dc compound generator Dc shunt generator Dc series generator Synchronous motor Dc compound generator Dc shunt generator Dc series generator Synchronous motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor delivers reactive power when ______ Under excited Normally excited None of the listed here Over excited Under excited Normally excited None of the listed here Over excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short-circuit test on a synchronous motor is usually about one minute one second one hour None of these one minute one second one hour None of these 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 less more twice equal less more twice equal ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Small synchronous motors are started by _______ Variable frequency source None of the listed here Pony motor Damper winding Variable frequency source None of the listed here Pony motor Damper winding ANSWER DOWNLOAD EXAMIANS APP
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