Single Phase Motors
The rotor slots, in an induction motor, are usually not quite parallel to the shaft because it

improves the efficiency
improves the power factor
helps in reducing the tendency of the rotor teeth to remain under the stator teeth
helps the rotor teeth to remain under the stator teeth

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Single Phase Motors
Which of the following statements regarding repulsion-start induction motor is incorrect ?

It requires more maintenance of commutator and other mechanical devices
It is not easily reversed
In fractional horse power motors, it has replaced the capacitor motors
It makes quite a bit of noise on starting

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