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QUESTIONS

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

Nil
Uniform
None of the listed here
Pulsating

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

Shaded pole motor
Hysteresis motor
Split phase motor
Universal motor

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Single Phase Motors
A shaded pole does not posses

Centrifugal switch
Capacitor
Commutator
All of the listed here

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

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

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Single Phase Motors
In a shaded pole motor the rotating magnetic field is produced by using

Shading coils
Copper windings
Salient poles
A capacitor

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