3-PHASE INDUCTION MOTOR - 5 | Take the Quiz

A detailed illustration of a 3-phase induction motor with labeled parts, showing electrical connections and operational principles against a technical background.

3-Phase Induction Motor Quiz

Test your knowledge of 3-phase induction motors with our comprehensive quiz designed for both students and professionals in the electrical engineering field. Learn more about the intricacies and operational principles of induction motors while assessing your understanding.

10 Questions on key concepts
Multiple choice format for easy answering
Instant feedback on your answers

10 Questions2 MinutesCreated by WindingGear305

41. The low power factor of induction motor is due to ___________

Rotor leakage reactance

Stator reactance

The reactive lagging magnetizing current necessary to generate the magnetic flux

All of the above

42. Less maintenance troubles are experienced in case of ____________

Slip ring induction motor

Squirrel cage induction motor

Both a & b

None of the above

43. A squirrel cage induction motor is not selected when ____________

Initial cost is the main consideration

Maintenance cost is to be kept low

Higher starting torque is the main consideration

All above consideration are involved

44. In a star/delta starter of an induction motor __________

Resistance is inserted in the stator

Reduced voltage is applied to the stator

Resistance is inserted in the rotar circuit

Applied voltage per stator phase is 57.7% of the line voltage

45. The rotar of an induction motor runs at __________

Synchronous speed

Below synchronous speed

Above synchronous speed

Any of the above

46. An induction motor is identical to ____________

DC compound motor

DC series motor

Synchronous motor

Asynchronous motor

47. The efficiency of an induction motor is _______ than that of a transformer.

Lower

Higher

Either of the above

None of the above

48. If the rotor circuit of a squirrel cage induction motor is open, the rotor will __________

Run at veryhigh speed

Run at very low speed

Make noise

Not run

49. Out of the following methods of starting a 3-phase induction motor, which one requires six stator terminals?

Direct on line

Star delta

Auto transformer

Rotor rheostat

50. The fractional slip of an induction motor is the ratio of __________

Rotor copper loss/rotor output

Rotor copper loss/rotor input

Rotor copper loss/stator copper loss

Stator copper loss/stator input

3-PHASE INDUCTION MOTOR - 5

3-Phase Induction Motor Quiz

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