Ferromagnetic materials show hysteresis in B-H characteristics. As the magnetic field is increases slowly from zero value, what is the first process which sets in the material to give net magnetization?
A. Growth of favorably oriented domains at the cost of other domains by reversible boundary displacements
B. Growth of favorably oriented domains at the cost of other domains by irreversible boundary displacements
C. Domain wall orientation
D. A combination of processes A and C above
Answer: Option A
Related Questions on Materials and Components
For making a capacitor it is better to have a dielectric having
A. High permittivity
B. Low permittivity
C. Permittivity same as that of air
D. Permittivity which is neither high nor low
As the viscosity of a liquid increases, the relaxation time
A. Remains constant
B. Increases
C. Decreases
D. First decreases then increases

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