Induction Motor MCQs Part 10

Induction Motor MCQs Part 10

A double squirrel-cage induction motor comprises of

A double squirrel-cage induction motor comprises of:

1. Two parallel windings in stator
2. Two parallel windings in rotor
3. Two series windings in stator
4. Two rotors moving in opposite direction

Correct answer: 2. Two parallel windings in rotor

An induction motor can run at synchronous speed when

An induction motor can run at synchronous speed when:

1. Emf is injected in the rotor circuit
2. It runs on voltage higher than the rated voltage
3. It is run in reverse direction
4. It is run on load

Correct answer: 1. Emf is injected in the rotor circuit

Belted slip ring induction motor is almost invariably employed for

Belted slip ring induction motor is almost invariably employed for:

1. Jaw crushers
2. Centrifugal blowers
3. Water pumps
4. None of these

Correct answer: 1. Jaw crushers

Crawling in an induction motor occurs due to

Crawling in an induction motor occurs due to:

1. Low voltage supply
2. High loads
3. Harmonics developed in the motor
4. Improper design of machine

Correct answer: 3. Harmonics developed in the motor

Short-circuit test on an induction motor cannot be used to find

Short-circuit test on an induction motor cannot be used to find:

1. Copper losses
2. Transformation ratio
3. Power scale of circle diagram
4. Windage losses

Correct answer: 4. Windage losses

More MCQs on Induction motor:

1. Induction Motor MCQs Part 1
2. Induction Motor MCQs Part 2
3. Induction Motor MCQs Part 3
4. Induction Motor MCQs Part 4
5. Induction Motor MCQs part 5
6. Induction Motor MCQs Part 6
7. Induction Motor MCQs Part 7
8. Induction Motor MCQs Part 8
9. Induction Motor MCQs Part 9