Induction Motor MCQs Part 10
Contents
A double squirrel-cage induction motor comprises of
A double squirrel-cage induction motor comprises of:
- Two parallel windings in stator
- Two parallel windings in rotor
- Two series windings in stator
- 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:
- Emf is injected in the rotor circuit
- It runs on voltage higher than the rated voltage
- It is run in reverse direction
- 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:
- Jaw crushers
- Centrifugal blowers
- Water pumps
- None of these
Correct answer: 1. Jaw crushers
Crawling in an induction motor occurs due to
Crawling in an induction motor occurs due to:
- Low voltage supply
- High loads
- Harmonics developed in the motor
- 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:
- Copper losses
- Transformation ratio
- Power scale of circle diagram
- Windage losses
Correct answer: 4. Windage losses
More MCQs on Induction motor:
- Induction Motor MCQs Part 1
- Induction Motor MCQs Part 2
- Induction Motor MCQs Part 3
- Induction Motor MCQs Part 4
- Induction Motor MCQs part 5
- Induction Motor MCQs Part 6
- Induction Motor MCQs Part 7
- Induction Motor MCQs Part 8
- Induction Motor MCQs Part 9