Synchronous motors are usually not self-starting because

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Electrial Engineering MCQ on Synchronous Motors

Synchronous motors are usually not self-starting because

  1. Starters cannot be used with these machines
  2. Starting winding is not provided on the machines
  3. The direction of instantaneous torque reverses after half cycle
  4. The direction of rotation is not fixed

Correct answer: 3. The direction of instantaneous torque reverses after half cycle

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