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Single Phase Motors

Single Phase Motors
The washing machine generally employs ______ motor.

Single phase series motor
Resistance split phase
Shaded pole
Hysteresis

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Single Phase Motors
The direction of rotation of an hysteresis motor is determined by

none of these
interchanging the supply leads
position of shaded pole with respect to main pole
retentivity of the rotor material

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Single Phase Motors
Which of the following motor can be used for unity power factor?

Hysteresis motor
Capacitor run motor
Scharge motor
Shaded pole motor

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Single Phase Motors
The resistance split phase induction motors are the most popular single phase motors because of ______

The long starting period
Their high starting torque
None of the listed here
Their low cost

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Single Phase Motors
For the same rating, a dc series motor costs ______single phase series motor.

More than
Less than
None of the listed here
About the same

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Single Phase Motors
The direction of rotation of shaded pole motor depends on ______

Number of poles on the stator
Supply frequency
Supply voltage
Which half of the pole is shaded

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