Question 7. (6 points) (a) Describe the difference between a \'hard\' and a ‘sof

Question

Question 7. (6 points) (a) Describe the difference between a 'hard' and a ‘soft, ferromagnet. Why is a soft magnet soft? You can use the Magnetization (M) vs Magnetic field (H) graph, which is shown below, to explain (b) If you were choosing a ferromagnet material for a generator and motor, which need to exchange the mechanical to electrical energy fast, would you prefer a hard or a soft ferromagnet? Would you want to have the material with small random grains or large preferred oriented grains? And why? (c) Do you expect a more efficient soft magnet if you have a microstructure like the one you made in question 5, with small precipitates well distributed in the grains? Explain Why? You can use the Magnetization (M) vs Magnetic field graph to explain.

Explanation / Answer

Hard Magnetic Materials

Soft Magnetic Materials

Soft magnet are soft beacuse they domain wall movement is made easier.Apart Coercivity and retentivity values are less.

b)Soft magnetic enhance the field produced by the motor windings so they are used motor to they are used in mechanical to electrical enegry conversation.Small oriented grains are preferred because tend to decrease the electrical and thermal conductivity of the material very less.

c)Yes. We can make Amorphous Nano-Crystalline Alloys or Nickel-iron alloys or Iron-Silicon Alloys  so they application in the field of magnetic shielding, converting one AC voltage into another etc.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.