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Magnetic Properties Of Material - Questions and Answers

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16. If the magnetic moment, M and the magnetic field of induction, B of a material are in the same direction, then the magnetic material is
A. paramagnetic
B. diamagnetic
C. either paramagnetic or diamagnetic
D. neither paramagnetic nor diamagnetic
Explanation:
17. Which of the following is NOT ferromagnetic
A. Co
B. Cr
C. Ni
D. Fe
Explanation:
18. Which one of the following is diamagnetic
A. Cr
B. Ni
C. Pb
D. Al
Explanation:
19. Which of the following statements are false (a) For diamagnetic material k ∝ 1/T. (b) Spontaneous magnetism is present in ferromagnetic materials. (c) Curie temperature is not associated with paramagnetic materials. (d) Domains are present in diamagnetic materials.
A. (a) and (b)
B. (b) and (c)
C. (c) and (d)
D. (a) and (d)
Explanation:
20. The relationship between the relative permeability and the susceptibility is
A. µr = k
B. µr = 1-k
C. µr = k-1
D. µr = 1+k
Explanation:
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