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Single Phase Motors

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

Nil
Uniform
Pulsating
None of the listed here

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Single Phase Motors
If the single phase motor runs hot the probable cause cannot be

Shorted stator coils
Low voltage
Blown fuse
High voltage

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Single Phase Motors
Which of the following motors is generally used for elctric shavers?

Universal motor
Shaded pole motor
Reluctance motor
Hysteresis motor

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Single Phase Motors
In repulsion motor direction of rotation of motor

is opposite to that of brush shift
is independent of brush shift
is the same as that of brush shift

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Single Phase Motors
Most of the fractional horsepower motors have either

soft and porous bearings
ball or roller bearings
plain or sleeve bearings
hard and annealed bearings

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Single Phase Motors
The speed of a universal motor is generally reduced by using

V-belts
Gear trains
Brakes
Chains

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