Motor controlsQuestion 72 of 1506

A flow switch is sitting on a storage shelf, uninstalled. What is its normal condition?

  1. Full rated flow
  2. Zero liquid flow
  3. Half of the rated flow
  4. Flow at the alarm setpoint
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Correct answer: Zero liquid flow

Normal means no process influence on the switch.

Source: Lessons in Electric Circuits IV: Digital (Kuphaldt), 4.3: Contact “Normal” State and Make/Break Sequence

Practice motor controls

Questions last reviewed: 18 October 2026