Materials and Components Questions

• Magnetisation of a material is the magnetic dipole moment per m3.
• A dielectric material must be
• Fleming's left hand rule is used to find
• Which inductor is used at high frequencies?
• A vacant electronic state moves in the same direction as would a positive charge carrier.
• By inserting a plate of dielectric between the plates of a parallel plate capacitor, the energy stored in the capacitor is increased five times. The dielectric constant of material is
• In van der walls crystals, there exists a high degree of stability of the outer electron shell.
• A vacuum parallel plate capacitor is charged. The field between the plates is 2 x 104 V/m. If the space between the plates is filled with a material having ∈r = 10, then the value of field in the dielectric will be
• If WF is the Fermi level, then in a metal at T = 0
• Electric dipole moment is expressed in debye unit.
• All magnetic materials exhibit the phenomenon of saturation.
• Which inductor is linear?
• The units for intrinsic strength of dielectric are
• Spontaneous magnetisation is characteristic of ferromagnetic materials.
• 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.