Induction Motor MCQs Part 23

Electrical Engineering MCQs on Induction Motor

A 3-phase induction motor stator delta connected, is carrying full load. One of its fuses blows out, the motor

A 3-phase induction motor stator delta connected, is carrying full load. One of its fuses blows out, the motor

  1. Will continue running burning its one phase
  2. Will continue running burning its two phases
  3. Will continue running without any harm to the winding
  4. Will stop and carry heavy current causing permanent damage to its winding

Correct answer: 1. Will continue running burning its one phase

Insertion of resistance in the stator of an induction motor is done, because, it

Insertion of resistance in the stator of an induction motor is done, because, it

  1. Decreases the starting torque
  2. Increases the load torque
  3. Increases the starting torque
  4. None of these

Correct answer: 1. Decreases the starting torque

The shaft of an induction motor is made of

The shaft of an induction motor is made of

  1. Carbon steel
  2. Cast iron
  3. High speed steel
  4. Stainless steel

Correct answer: 1. Carbon steel

In case of the induction motors the torque is

In case of the induction motors the torque is

  1. Directly proportional to slip
  2. Directly proportional to slip2
  3. Inversely proportional to √slip
  4. Inversely proportional to slip

Correct answer: 1. Directly proportional to slip

The induction motor is identical to

The induction motor is identical to

  1. Asynchronous motor
  2. DC compound motor
  3. DC series motor
  4. Synchronous motor

Correct answer: 1. Asynchronous motor

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