railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Single Phase Motor and Special Machines Hysteresis Motor
Which of the following statements about characteristics of a hysteresis motor is NOT correct?
1
By changing the number of stator poles through pole changing connections, a set of synchronous speeds for the motor can be obtained.
2
Hysteresis motors have uniform torque from stand still to synchronous speed.
3
In a hysteresis motor the number of rotor poles are greater than the number of stator poles.
4
In a hysteresis motor, the number of rotor poles are equal to the number of stator poles.