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Single Phase Motors

Single Phase Motors
A 4-pole , 50 Hz single phase induction motor is running with a slip of 3.4%. The speed of the motor is

1540 rpm
1279 rpm
1120 rpm
1449 rpm

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Single Phase Motors
A 4 pole, 50 Hz single phase induction motor has a slip of 5% . The speed of the motor will be

1425 rpm
1200 rpm
1500 rpm
None of the listed here

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

Reluctance motor
Shaded pole motor
Hysteresis motor
Universal motor

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Single Phase Motors
Which of the following applications always have some load whenever switched on?

Piston drills
All of the listed here
Vaccum cleaners
Fan motors

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Single Phase Motors
The motor used on small lathes is usually

3-phase synchronous motor
Universal motor
Single phase capacitor run motor
Dc shunt motor

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Single Phase Motors
In a universal motor, the most common cause of brush sparking is

shorted field winding?
open armature winding
high commutator mica
all of these

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MORE MCQ ON Single Phase Motors

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