Synchronous Motors A synchronous motor can operate at Leading power factor Lagging, leading and unity power factors Lagging power factor only Unity power factor only Leading power factor Lagging, leading and unity power factors Lagging power factor only Unity power factor only ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The net armature voltage of a synchronous motor is equal to the vector difference of Eh and V arithmetic sum of Eb and V vector sum of Eb and V arithmetic difference of Eb and V vector difference of Eh and V arithmetic sum of Eb and V vector sum of Eb and V arithmetic difference of Eb and V ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The ratio of starting torque to running torque in a synchronous motor is Infinity Zero Two One Infinity Zero Two One ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In case one phase of a three-phase synchronous motor is short-circuited the motor will not start run at 2/3 of synchronous speed take less than the rated load run with excessive vibrations not start run at 2/3 of synchronous speed take less than the rated load run with excessive vibrations ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 60° 45° 90° 120° 60° 45° 90° 120° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor with large air gap has A small value of inherent regulation All of the listed here A higher value of stability limit A higher synchronizing power which makes the machine less sensitive to load variations A small value of inherent regulation All of the listed here A higher value of stability limit A higher synchronizing power which makes the machine less sensitive to load variations ANSWER DOWNLOAD EXAMIANS APP
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