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Module 5: Introduction to motors

20242m

A stepping motor is a _____ device.
(i) Mechanical
(ii) Electrical
(iii) Analogue
(iv) Incremental

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Answer

Correct Option: (iv) Incremental

Explanation

Stepper motor moves in discrete angular steps (e.g., 1.8° per pulse) in response to digital pulses. It is incremental / digital device.

  • Each pulse → one step, position = count × step angle.
  • Open-loop position control without feedback.
  • Also electromechanical (electrical + mechanical), but “incremental” distinguishes it from continuous analog motors.

Final Answer

Incremental (digital) → Option (iv).

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