The rotor developed by a single-phase motor at starting is___________?
Correct answer: D. zero
- A. more than i.he rated torque
- B. rated torque
- C. less than the rated torque
- D. zero
Explanation
A single-phase induction motor has two equal, oppositely rotating field components at standstill, whose torques cancel each other. Therefore, its starting torque is zero unless an auxiliary starting arrangement is provided.
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