Question

Which of the following helps in collection of current from the armature conductors and converts the induced alternating current of the armature into direct current?

• A. Pole shoes
• B. Field coil
• C. Brushes
• D. Commutator

Hint:

In a DC machine, the commutator converts internally induced alternating current into direct current.

Answer 1

The Correct Option is D

Concept:
In a DC generator, the armature produces alternating current internally, but the output required is direct current.

Step 1: Armature conductors rotate in a magnetic field and an emf is induced in them.

Step 2: The induced current in the armature conductors is alternating in nature.

Step 3: The commutator acts as a mechanical rectifier.

Step 4: It reverses the connections at proper intervals and converts the alternating current in the armature into direct current at the external circuit.

Step 5: Therefore, the required part is the commutator. \[ \boxed{\text{Commutator}} \]