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A vacuum cleaner motor is usually of the

  • A.shaded pole type
  • B.permanent split capacitor type
  • C.reluctance synchronous type
  • D.universal type

Answer: D

Correct answer: universal type

A vacuum cleaner needs a great deal of power from a very small and light machine, and the universal motor delivers it by running at 10,000 revolutions a minute or more. Its brushes wear and it is noisy, which is acceptable in an appliance used intermittently for short periods.

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