State principle behind electric motor. What is role of
commutator? Explain with the help of diagram.
Answers
Answer:
The principle of an electric motor is based on the current carrying conductor which produces magnetic field around it. A current carrying conductor is placed perpendicular to the magnetic field so that it experiences a force.
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. ... By reversing the current direction in the rotating windings each half turn, a steady rotating force (torque) is produced
Answer:
Principle of electric motor:- When a rectangular coil is placed in a magnetic field and current is passed through it, a force acts on it which makes the coil rotate continuously.
Role of commutator:- The role of commutator or split rings is to reverse the direction of current in the motor.
