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

Fan motors
Vaccum cleaners
All of the listed here
Piston drills

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

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

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