Synchronous Motors A synchronous motor runs at speed ranging from ______ 3600 to 6000 rpm 1800 to 3600 rpm 150 to 1800 rpm None of the listed here 3600 to 6000 rpm 1800 to 3600 rpm 150 to 1800 rpm None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ 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 None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of a synchronous motor will be minimum for ______ power factor. 0.8 lagging Unity None of the listed here 0.8 leading 0.8 lagging Unity None of the listed here 0.8 leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor delivers reactive power when ______ Normally excited None of the listed here Over excited Under excited Normally excited None of the listed here Over excited Under excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can operate at Unity power factor only Leading power factor Lagging power factor only Lagging, leading and unity power factors Unity power factor only Leading power factor Lagging power factor only Lagging, leading and unity power factors ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The ratio of starting torque to running torque in a synchronous motor is Two Infinity One Zero Two Infinity One Zero ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS