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Single Phase Motors

Single Phase Motors
A scharge motor can run on

All of the listed here
Zero slip
Negative slip
Positive slip

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Single Phase Motors
A 50 Hz, 4- pole single phase induction motor will have a synchronous speed of ______

1500 rpm
1200 rpm
None of the listed here
750 rpm

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Single Phase Motors
Which of the following motors is used for unity power factor ?

Reluctance motor
Universal motor
Hysteresis motor
Schrage motor

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Single Phase Motors
A repulsion motor is equipped with

both (A) and (B)
commutator
slip rings
None of these

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Single Phase Motors
The speed control of universal motor used for sewing machines is by

Varying the resistance
Centrifugal mechanism
Tapping the field
Friction

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Single Phase Motors
A shaded pole motor can be used for

Toys
Hair dryers
Circulators
Any of the listed here

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