Question

Why is the armature of dc machine is made of laminated sheet of silicon steel?

Answer 1

Answer:

Explanation:

An a

armature winding of DC motor is connected to a rotating

part of the machine called rotor. It goes through an alternating magnet field.  This results in magnetic losses.  

Because of

magnetic losses, rotor is built using armature core which in turn is

made with many low-hysteresis silicon steel lamination. These

lamination are stacked together to create cylindrical structure. Thus hysteresis

and eddy current loss are reduced.