Synchronous Motors A synchronous motor develop maximum power when load angle is 60° 90° 120° 45° 60° 90° 120° 45° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If one phase of a 3 phase synchronous motor is short circuited, motor 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 Will refused ro start ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 45° 90° 120° 60° 45° 90° 120° 60° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Change of D.C. excitation of a synchronous motor changes Motor speed Applied voltage of the motor Power factor of power drawn by the motor Any of the above Motor speed Applied voltage of the motor Power factor of power drawn by the motor Any of the above ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous machine with low value of short-circuit ratio has good voltage regulation good speed regulation lower stability limit high stability limit good voltage regulation good speed regulation lower stability limit high stability limit ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The minimum armature current of the synchronous motor corresponds to operation at 0.707 power factor lagging unity power factor 0.707 power factor leading zero power factor leading 0.707 power factor lagging unity power factor 0.707 power factor leading zero power factor leading ANSWER DOWNLOAD EXAMIANS APP