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.
What is the function of brushes in motor?
IN ELECTRIC MOTOR the function of brushes is to make contact with the rotating rings and through them to supply current to the coil. function of commutator in an electric motor is to reverse the direction of current through the coil periodically.
What is the role of brushes in electric motor Class 10?
Brushes: It conducts current between stationary wires and moving parts, most commonly in a rotating shaft. Split Ring: It helps to reverse the direction of current in the circuit.
Is the function of brushes?
A brush is a device which conducts current between stationary wires and moving parts, most commonly in a rotating shaft. Typical applications include electricmotors, alternators and electric generators.
What is the principle of electric motor?
The electric motor works on the principle of magnetic effects of current. Its principle is when a rectangular coil is placed in a magnetic field and current is passed through it, the coil rotates as a result of the forces acting on the coil.
Why are carbon brushes used in AC?
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 are the function 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.
Which material is commonly used in brushes?
Which material is commonly used in brushes? Explanation: Carbon is the most commonly used material in the manufacture of brushes.