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Chemical Engineering - Chemical Engineering Basics - Discussion

Discussion Forum : Chemical Engineering Basics - Section 1 (Q.No. 23)
Chemical Engineering Basics
23.
Pick out the wrong statement.
A ferromagnetic material becomes paramagnetic above the 'Curie temperature'.
Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials.
Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces.
Tungsten steel and alnico are not hard magnetic materials.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.
Amulya Gv said:   4 years ago
The substance which are strongly attracted by magnetic field are ferromagnetic whereas, paramagnetic material that tend to get weakly magnetized when placed in magnetic field.
(1)
Vishnu said:   8 years ago
What is ferromagnetiic and paramagnetic?
Raj said:   8 years ago
What is a hysterisis loss and coercive force?
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