Materials and Components - Engineering

Q1:

In a specimen of silicon steel, a field strength of 200 A/m causes a flux density of 0.5 T. In a specimen of cast iron, the same H would cause B to be

A 0.5 T

B less than 0.5 T

C more than 0.5 T

D 0.5 T or more or less

ANS:B - less than 0.5 T

Because cast iron has lower permeability than silicon steel.