Multiple choice general knowledge science & technology

The armature mmf waveform in a dc machine is

  1. pulsating

  2. rectangular

  3. triangular

  4. sinusoidal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The armature MMF waveform in a DC machine is triangular in shape. This is because the armature conductors are distributed in slots, creating a MMF distribution that varies linearly across the pole face, forming a triangular pattern rather than sinusoidal or rectangular.

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