Synchronous Motors When pull-out torque occurs in a synchronous motor, the poles of the rotor are _______ Coincident with statorbpoles Mid way between N and S poles of stator None of the listed here 45° (electrical) behind stator poles Coincident with statorbpoles Mid way between N and S poles of stator None of the listed here 45° (electrical) behind stator poles ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is ______ stator voltage. Directly proportional to Invesely proportional to Independent of Directly proportional to square of Directly proportional to Invesely proportional to Independent of Directly proportional to square of ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is independent of _________. Field excitation Applied stator voltage Torque angle Speed Field excitation Applied stator voltage Torque angle Speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is pulled out of synchronism, the stator current ________ Is decreased too much Remains unchanged Is increased too much Become zero Is decreased too much Remains unchanged Is increased too much Become zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ 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 Reduce dc field excitation to zero None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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