# Frequent question: What is the role of commutator and carbon brushes in an electric motor?

Contents

Commutator: The function of commutator rings is to reverse the direction of current flowing through the coil every time the coil just passes the vertical position during a revolution. Carbon Brushes: It conducts current between stationary wires and moving parts, most commonly in a rotating shaft.

## What is the function of the carbon brushes in electric motor?

A carbon brush is a sliding contact used to transmit electrical current from a static to a rotating part in a motor or generator, and, as regards DC machines, ensuring a spark-free commutation.

## What is the function of a commutator in an electric motor?

A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit.

## What are the functions of commutator?

The function of commutator ring in an electric motor is to reverse the direction of current flowing through the coil every time coil just passes the vertical position during a revolution. Hence as the direction of the current is reversed, the torque is changed in the direction.

## What is the purpose of carbon brush?

A brush or carbon brush is an electrical contact which conducts current between stationary wires and moving parts, most commonly in a rotating shaft. Typical applications include electric motors, alternators and electric generators.

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## What is the function of commutator and brush?

Commutator and Brushes

The commutator on the DC generator converts the AC into pulsating DC. The commutator assures that the current from the generator always flows in one direction. The brushes ride on the commutator and make good electrical connections between the generator and the load.

## What are the advantages & disadvantages of carbon brushes?

Advantages of carbon brushes:

These brushes are a self-lubricating type. Carbon brushes are one of the best electrical conductors. By using these types of brushes we can increase the conductivity. This is also used at low circuit’s which can work under the low-power field.