railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Single Phase Motor and Special Machines Hysteresis Motor
Consider the following statements about features of a hysteresis motor and select the suitable combination of correct choices.
a. Its hysteresis torque remains practically constant from locked rotor to synchronous speed.
b. Hysteresis motor is able to accelerate at any load.
c. It operates quietly and does not suffer from magnetic pulsations.
d. Hysteresis motor is subject to mechanical vibrations.
1
Only b is correct
2
Only d is correct
3
a, b and c are correct
4
a, c and d are correct