Write the functions of armature, split rings, magnet and brushes.
Answers
1) Armature- Rotates when electric current is passed hence its kinetic energy can be used for various purposes. 2) Brushes- Maintains contact of the armature coil with the main circuit while rotating. 3) Split Rings- Prevents the rotation of the main circuit while the rotation of armature coil.
Answer:
In the armature, an electromotive force is created by the relative motion of the armature and the field. When the machine or motor is used as a motor, this EMF opposes the armature current, and the armature converts electrical power to mechanical power in the form of torque, and transfers it via the shaft.
Split ring is used for reversing the direction of current in the coil. ... Therefore, after every half rotation of the coil the direction of the couple rotating the coil remains the same and the coil continues its rotation in the same direction.
Examples of magnet functions are:
Mechanical to mechanical, such as attraction and repulsion.
Mechanical to electrical, such as generators and microphones.
Electrical to mechanical, such as motors, loudspeakers, charged particle deflection.
Mechanical to heat, such as eddy current and hysteresis torque devices.
Function of brushes is to transfer the current from coil to load connected in the circuit of the electric generator.