Answer : The operating speed of a synchronous motor can be changed to new fixed value by changing frequency.
Description : If we change the excitation of synchronous machine will it affect on motor speed?
Answer : No, If we change the excitation of synchronous machine it will not affect on motor speed.
Answer : Centrifugal switch disconnects the auxiliary winding of the motor at about 70 to 80 percent of synchronous speed.
Answer : If the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in damage to the starting winding.
Answer : An alternator coupled to a hydraulic turbine runs at slow speed, as compared to others.