The main function of the commutator in a simple d.c. motor is to

Physics

NECO 2001

A. enable the armature to rotate freely
B. increase the flux linking the armature windings
C. maintain a direct current in the armature
D. provide uniform magnetic field around the armature
E. reverse the direction of the current in the armature.

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Correct Answer: Option E

Explanation

Reverse the direction of the current in the armature: This ensures that the magnetic forces acting on the armature continue to produce torque in the same rotational direction, allowing for continuous motion.

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The main function of the commutator in a simple d.c. motor is to

Correct Answer: Option E

Explanation

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