Discussion
Assertion (A): A hysteresis motor suits a high-inertia load.
Reason (R): Its torque is constant from standstill to synchronous speed.
Select the correct option.
Answer: B
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the mechanism. The hysteresis motor develops the same torque at every speed from standstill to synchronism, so a large inertia is accelerated steadily and pulled into step without the dip in torque that an induction machine shows. The smooth, quiet running that follows is why the type was used in turntables and gyroscopes.
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