Wiring and componentsQuestion 1295 of 1506

A motor start capacitor is an AC-rated electrolytic type. How can it be used?

  1. For continuous running duty
  2. As a power factor capacitor on the line
  3. For short duty only, such as starting
  4. Only on DC circuits with a fixed polarity
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Correct answer: For short duty only, such as starting

Its high losses allow intermittent use, such as 1 second on and 60 seconds off.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 13.9: Single-phase Induction Motors

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Questions last reviewed: 18 October 2026