Question

What is the function of commutators?

Answer 1

Hint: To solve this question we have to know about commutators. We know that a commutator is a rotating electrical switch that occasionally turns around the flow between the rotor and the outer circuit. The commutator was found by William Ritchie and Hippolyte Pixii . Commutators are utilized in DC machines (DC engines and DC generators) widespread engines.

Complete answer:
We can say, a commutator is worked with a bunch of contact bars and is set into the rotating shaft of a DC machine partnered to the armature winding. The commutator reverses the current flow within a winding when the shaft turns. Once the shaft completes a half-turn, the windings are connected so that current supplies through it in the reverse of the first direction.

The function of the commutator rings to reverse the direction of current flowing through the coil every time the coil just passes the vertical position during a revolution.We know that the commutator will change the immediate current (DC) into substituting current (AC). The commutator in the event of a DC generator, the actuated e.m.f inside the armature curl will change in nature. Therefore, the progression of current in the armature loop will likewise be changed.

Note:We know that, In a DC engine, the attractive field utilizes a pivoting power or a force over to the twisting to turn. Then again, in a DC generator, mechanical force is applied toward the shaft to keep up the armature winding movement. In the two cases, commutators switch the heading of the current stream all through the winding. The progression of current inside the circuit that is outside to the machine is a solitary way.