Why silicon steel is use in armature of dc machine?

Silicon steel is used in the armature of DC machines primarily for its Excellent magnetic properties, which enhance efficiency and reduce energy losses. The addition of silicon improves the electrical resistivity and reduces eddy current losses, allowing for better performance at higher frequencies. Additionally, silicon steel's mechanical strength and durability contribute to the overall reliability and longevity of the machine. This combination of benefits makes silicon steel an ideal material for the armature in DC machines.