Question

Name the part of the electric motor which changes the direction of current flowing through the coil after each half rotation.

Answer 1

Concept: Electric Motor

• The device that converts the electrical power input mechanical output is called the commutation.
• The motor has a commutator attached at the end of its rotor circuit.
• The commutator ensures that current flows through one direction only in the rotor circuit.
• Since, the supply to the rotor is alternating in nature, it changes its direction after every half cycle.

Explanation:

The commutator changes its terminal after every half cycle, which ensures the current flow in the circuit is in one direction only.

Thus, the one-word answer is “Commutator”.