Question

What is the property of ferromagnetic materials?

(a) Negative magnetization

(b) Magnetization slightly less than 1

(c) Magnetization slightly greater than 1

(d) Magnetization very much higher than 1

The question was posed to me during an interview for a job.

Query is from Magnetic Materials topic in portion Electrical Engineering Materials of Design of Electrical Machines

Answer 1

Right choice is (d) Magnetization very much higher than 1

To explain: Negative magnetization denotes the property of Diamagnetic materials. Magnetization slightly greater than 1 denotes the property of Paramagnetic materials. Ferromagnetic materials have magnetization in the range of 1000+.