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Single Phase Motors

Single Phase Motors
What could be the size of a universal motor for use in vaccum cleaners?

1 HP
2 HP
3/4 HP
1/4 HP

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Single Phase Motors
Which motor is normally free from mechanical and magnetic vibrations?

Universal motor
Shaded pole motor
Split phase motor
Hysteresis motor

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Single Phase Motors
A motor gets overheated due to

Overloads
Dry bearings
Worn bearings
All of the listed here

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Single Phase Motors
Torque developed by a single phase induction motor at starting is

None of the listed here
Uniform
Nil
Pulsating

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Single Phase Motors
Which of the following single phase motor is available with speed as low as one revolution per month?

Shaded pole
Universal
Reluctance
Hysteresis

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Single Phase Motors
If a DC series motor is operated on AC supply, it will

Spark excessively
Have poor power factor
All of the listed here
Have poor efficiency

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