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

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

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Single Phase Motors
Hysteresis motor is particularly useful for high-quality record players and tape-recorders because

it is not subject to any magnetic or mechanical vibrations
it can be easily manufactured in extremely small sizes of up to 1 W output
it develops hysteresis torque which is extremely steady both in amplitude and phase
it revolves synchronously

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