Synchronous Motor MCQs Part 4

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Electrical Engineering MCQs on Synchronous Motor Part 4

A change of load on synchronous motor will not result in change of

A change of load on synchronous motor will not result in change of:

  1. Speed
  2. Power factor
  3. Armature current
  4. Torque angle

Correct answer: 1. Speed

In synchronous motor if armature field axis is ahead of flux axis in direction of rotation, the machine is operating as

In synchronous motor if armature field axis is ahead of flux axis in direction of rotation, the machine is operating as:

  1. Synchronous motor
  2. Synchronous generator
  3. Asynchronous motor
  4. Asynchronous generator

Correct answer: 1. Synchronous motor

The full load slip of synchronous motor is

The full load slip of synchronous motor is:

  1. Zero
  2. 1%
  3. 5%
  4. 10%

Correct answer: 1. Zero

The rotor Cu losses in synchronous motor are met by

The rotor Cu losses in synchronous motor are met by:

  1. Armature input
  2. DC Source
  3. Motor input
  4. Supply lines

Correct answer: 2. DC Source

If a synchronous motor is pulled out of synchronism, the stator current

If a synchronous motor is pulled out of synchronism, the stator current:

  1. Is increased to a greater extend
  2. Is decreased to a greater extend
  3. Becomes zero
  4. Remains unchanged

Correct answer: 1. Is increased to a greater extend

More MCQs on Synchronous Motor:

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