What is the function of the armature core in relation to the magnetic circuit?

Question

Question

This question was previously asked in

RRB JE EE 22 Apr 2025 Shift 2 CBT 2 Official Paper

Answer 1

The correct answer is option 4.

Function of the Armature Core in Magnetic Circuits

Magnetic Path Completion:

The armature core is a key component in the magnetic circuit of machines like motors and generators.
It provides a low-reluctance path for magnetic flux to travel between the field poles and yoke, completing the magnetic loop.

Efficient Magnetic Flux Conduction:

Made of laminated soft iron or silicon steel to reduce eddy current losses.
It efficiently conducts the alternating magnetic flux without significant energy losses.

Supports Induced EMF:

As the armature rotates within the magnetic field, the armature windings (placed in slots on the core) cut through magnetic lines of force, inducing an electromotive force (EMF).

Mechanical Structure: