Discussion :: Chemical Engineering Basics-2
- Pick out the wrong statement.
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A.
A ferromagnetic material becomes paramagnetic above the 'Curie temperature' |
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B.
Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials |
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C.
Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces |
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D.
Tungsten steel and alnico are not hard magnetic materials |
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Answer : Option D
Explanation :
Explanation Not Provided
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