Spontaneous magnetisation is characteristic of ferromagnetic materials.

More Questions from Materials and Components

• In p type semiconductor, the conductivity due to holes is (e = charge on hole, μp = hole mobility, p = hole concentration)
• Assertion (A): Holes are majority carriers in p type semiconductor. Reason (R): In p type semiconductor, the electrons produced by thermal agitation recombine with holes.
• Silicon and germanium have diamond structure. The number of atoms in a volume equal to a3 where a is the edge of elementary cube are
• Specific resistance of silver is about
• The two conductors of a transmission line carry equal current I in opposite direction. The force on each conductor is
• A characteristic property of crystal is its periodicity of structure.
• The v-i relation for an arc is v = 44 + . If v = 50 V, i =
• Assertion (A): Electronic polarizability increases as atoms becomes larger. Reason (R): For rare gas, ∈0(∈r - 1) E = Nae, where N is number of atoms/m3 and ae is electronic polarizability of material.
• On the basis of the type of chemical bonds, solids may be classified into
• Piezoelectricity means the slight change in dimensions of a specimen when an electric field is applied.

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