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Single Phase Motors

Single Phase Motors
A 2 HP dc series motor will weigh ______2 HP single phase series motor.

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

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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
A motor gets overheated due to

Worn bearings
Dry bearings
Overloads
All of the listed here

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Single Phase Motors
In a repulsion motor, brushes are connected

To stator winding
To the external supply
Together by a jumper wire
To starting winding

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

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

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Single Phase Motors
When a universal motor is operated on no load, its speed is limited by

Supply voltage frequency
Windage and friction
Weight of the armature
Armature reaction

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