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Single Phase Motors

Single Phase Motors
The capacitor start, capacitor run motor has _______

No centrifugal switch
Low efficiency
Low power factor
Noisy operation

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Single Phase Motors
What could be the size of a universal motor for use in vaccum cleaners?

1/4 HP
1 HP
3/4 HP
2 HP

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Single Phase Motors
The repulsion start induction run motor is used because of

minimum cost
high starting torque
good power factor
high efficiency

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Single Phase Motors
If the capacitor of a single-phase motor is short-circuited

the motor will run in reverse direction
the motor will run
the motor will not start
the motor will run in the same direction at reduced r.p.m.

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Single Phase Motors
A repulsion motor is equipped with

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

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

Universal motor
Reluctance motor
Hysteresis motor
Shaded pole motor

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