Synchronous Motors The minimum armature current of the synchronous motor corresponds to operation at 0.707 power factor leading unity power factor 0.707 power factor lagging zero power factor leading 0.707 power factor leading unity power factor 0.707 power factor lagging zero power factor leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In case one phase of a three-phase synchronous motor is short-circuited the motor will run at 2/3 of synchronous speed not start run with excessive vibrations take less than the rated load run at 2/3 of synchronous speed not start run with excessive vibrations take less than the rated load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The ratio of starting torque to running torque in a synchronous motor is Two Zero One Infinity Two Zero One Infinity ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If one phase of a 3 phase synchronous motor is short circuited, motor Will refused ro start Will fail to pull into step Will not come upto speed Will overheat in spots Will refused ro start Will fail to pull into step Will not come upto speed Will overheat in spots ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is pulled out of synchronism, the stator current ________ Remains unchanged Is decreased too much Is increased too much Become zero Remains unchanged Is decreased too much Is increased too much Become zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can operate at Leading power factor Unity power factor only Lagging, leading and unity power factors Lagging power factor only Leading power factor Unity power factor only Lagging, leading and unity power factors Lagging power factor only ANSWER DOWNLOAD EXAMIANS APP
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