Q
Hysteresis motor is particularly useful for high-quality record players and tape-recorders because___________?
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A
A. It revolves synchronously
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B
B. It is not subject to any magnetic or mechanical vibrations
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C
C. It can be easily manufactured in extremely small sizes of up to 1 w output
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D
D. It develops hysteresis torque which is extremely steady both in amplitude and phase
Correct Answer:
D. D. It develops hysteresis torque which is extremely steady both in amplitude and phase
