Synchronous Motors If one phase of a 3 phase synchronous motor is short circuited, motor Will refused ro start Will not come upto speed Will fail to pull into step Will overheat in spots Will refused ro start Will not come upto speed Will fail to pull into step Will overheat in spots ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The direction of rotation of a synchronous motor can be reversed by reversing, Supply phase sequence Polarity of rotor poles None of the listed here Current to field winding Supply phase sequence Polarity of rotor poles None of the listed here Current to field winding ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Small synchronous motors are started by _______ Damper winding Variable frequency source Pony motor None of the listed here Damper winding Variable frequency source Pony motor None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor runs at speed ranging from ______ 3600 to 6000 rpm 150 to 1800 rpm 1800 to 3600 rpm None of the listed here 3600 to 6000 rpm 150 to 1800 rpm 1800 to 3600 rpm None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Change of D.C. excitation of a synchronous motor changes Motor speed Any of the above Applied voltage of the motor Power factor of power drawn by the motor Motor speed Any of the above Applied voltage of the motor Power factor of power drawn by the motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The size of a synchronous motor is determined by its _____ kW rating None of the listed here kVA rating kVAR rating kW rating None of the listed here kVA rating kVAR rating ANSWER DOWNLOAD EXAMIANS APP
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