Synchronous Motor MCQs Part 3

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Synchronous Motor MCQs Part 3

The rotor of synchronous motor is:

  1. Salient pole type
  2. Non-salient pole type
  3. Similar to a DC motor’s rotor
  4. None of these

Correct answer: 1. Salient pole type

Synchronous motor runs at speed that is

Synchronous motor runs at speed that is:

  1. Higher than synchronous speed
  2. Lower than synchronous speed
  3. Same as synchronous speed
  4. None of these

Correct answer: 3. Same as synchronous speed

The slip rings in synchronous motor carry

The slip rings in synchronous motor carry:

  1. AC current
  2. DC current
  3. Both of these
  4. None of these

Correct answer: 1. DC current

If field of synchronous motor is under excited the power factor will be

If field of synchronous motor is under excited the power factor will be:

  1. Unity
  2. Zero
  3. Leading
  4. Lagging

Correct answer: 4. Lagging

The speed of synchronous motor

The speed of synchronous motor:

  1. Increases with increases in load
  2. Increases with decreases in load
  3. Always remains constant
  4. None of these

Correct answer: 3. Always remains constant

See complete list of Electrical Engineering MCQs on Synchronous motor

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