Red Seal Electrician Practice
MotorsQuestion 1222 of 1506

How does a stepper motor differ from a conventional motor?

  1. Its rotor never holds a position when it is stopped.
  2. Its rotor has a commutator that reverses the current.
  3. Its rotor moves in discrete steps on command.
  4. Its rotor turns at line frequency only.
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Correct answer: Its rotor moves in discrete steps on command.

A stepper moves one step each time the drive waveform changes.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 13.5: Stepper Motors

Practice motors

Questions last reviewed: 18 October 2026