Red Seal Electrician Practice
Motor controlsQuestion 237 of 1506

A switch’s mechanism cannot be redesigned, but its contact bounce disturbs a fast circuit. What can be added outside the switch?

  1. A low-pass filter on its output
  2. A second switch wired in series
  3. A larger gap between the contacts
  4. A higher supply voltage on it
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Correct answer: A low-pass filter on its output

A filter smooths the rapid changes made by the bounce.

Source: Lessons in Electric Circuits IV: Digital (Kuphaldt), 4.4: Contact “Bounce”

Practice motor controls

Questions last reviewed: 18 October 2026