Electrical Engineering · Electrical Machines
Which statements describe the action of the commutator in a DC motor? I. It reverses the current direction in the armature coils. II. It aligns the magnetic field of the armature with the stator field. III. It ensures continuous rotation by switching coil connections. IV. It eliminates the need for brushes.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1III and IV only
- 2I and II only
- 3II and IV only
- 4I and III only✓
Correct answer
I and III only
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