MCQOPTIONS
Saved Bookmarks
| 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. | |