The rotor of a hysteresis motor is made of___________?
Correct answer: C. chrome steel
- A. aluminium
- B. cast iron
- C. chrome steel
- D. copper
Explanation
The hysteresis rotor is made from hard magnetic material such as chrome steel, which has a wide hysteresis loop and retains magnetism. Aluminium and copper are nonmagnetic conductors and are unsuitable for producing hysteresis torque.
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