

MCQOPTIONS
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1. |
Pick out the wrong statement ? |
A. | A ferromagnetic material becomes paramagnetic above the ‘Curie temperature’ |
B. | Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials |
C. | Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces |
D. | Tungsten steel and alnico are not hard magnetic materials |
Answer» E. | |