Single phase induction motors

11. Which motor is normally free from mechanical and magnetic vibrations ?

Split phase motor
Universal motor
Hysteresis motor
Shaded pole motor

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and magnetic vibrations ?" class="read-more button" href="https://exam.pscnotes.com/mcq/which-motor-is-normally-free-from-mechanical-and-magnetic-vibrations/#more-49813">Detailed SolutionWhich motor is normally free from mechanical and magnetic vibrations ?
?" class="read-more button" href="https://exam.pscnotes.com/mcq/which-of-the-following-motors-is-inherently-self-starting/#more-49781">Detailed SolutionWhich of the following motors is inherently self starting ?

13. In case of high speed universal motor which of the following needs more attention ?

End play
Air gap
Insulation in rotor
Balancing of rotor

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which of the following needs more attention ?" class="read-more button" href="https://exam.pscnotes.com/mcq/in-case-of-high-speed-universal-motor-which-of-the-following-needs-more-attention/#more-49576">Detailed SolutionIn case of high speed universal motor which of the following needs more attention ?

14. When a D.C. series motor is connected to

high inductance of field and armature circuits
induced current in rotor due to variations of flux
none of the above

Detailed SolutionWhen a D.C. series motor is connected to

15. A universal motor can run on

D.C. only
D.
only B.
none of the above

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button" href="https://exam.pscnotes.com/mcq/a-universal-motor-can-run-on/#more-49503">Detailed SolutionA universal motor can run on

16. In repulsion motor, maximum torque is developed when

brush axis is at 45° electrical to the field axis
brush axis coincides with the field axis
none of the above

Detailed SolutionIn repulsion motor, maximum torque is developed when

17. The wattage rating for a ceiling fan motor will be in the range

200 to 250 W
250 to 500 W
50 to 150 W
10 to 20 W

Detailed SolutionThe wattage

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rating for a ceiling fan motor will be in the range

18. Which of the following motor will give the highest starting torque ?

D.C. shunt motor
Schrage motor
shunt motor B. Schrage motor C. Repulsion start and induction run motor
Universal motor

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class="youtube-subscribe-container"> Subscribe on YouTube the highest starting torque ?" class="read-more button" href="https://exam.pscnotes.com/mcq/which-of-the-following-motor-will-give-the-highest-starting-torque/#more-48615">Detailed SolutionWhich of the following motor will give the highest starting torque ?

19. Which of the following statements regarding reluctance-start motor is incorrect ?

It is similar to reluctance motor
It is basically an induction motor and not a synchronous one
So far as its basic working principle is concerned, it is similar to shaded pole motor
the air-gap between rotor and salient poles is non- uniform

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class="read-more button" href="https://exam.pscnotes.com/mcq/which-of-the-following-statements-regarding-reluctance-start-motor-is-incorrect/#more-48444">Detailed SolutionWhich of the following statements regarding reluctance-start motor is incorrect ?

20. Two-value capacitor motor finds increased application as compressor motor in small home air-conditioners because

it is comparatively cheaper
it has almost non-destructible capacitor
it is quiet in operation

Detailed SolutionTwo-value capacitor motor finds increased application as compressor motor in small home air-conditioners because

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