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