Materials and Components Questions

• The most important set of specifications of transformer oil include
• If μp is permanent dipole moment and T is absolute temperature, the orientation polarization of polyatomic gases is
• We can know the arrangement of atom in a material by studying electron diffraction pattern.
• Schrodinger wave equation is partial differential equation.
• Assertion (A): If an atom of polarizability a is placed in homogeneous field E, the energy stored is 0.5 aE2. Reason (R): Capacitance of an isolated conducting sphere R in vacuum is 4 p∈0 R farads.
• The charge per proton is
• The capacitance of a capacitor is not affected by
• Hall effect is observed in a specimen (metal or semi- conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
• With increase in temperature, the electrical conductivity would
• Yettrium-iron garnet (Y2Fe5O12) is a soft magnetic material suitable for applications involving
• For a diamagnetic material, μr = 1.
• An electron for which l = 0 has zero orbital magnetic dipole moment.
• A magnetic field exists around
• The resistance of a photoconductor
• The resistance of a metallic wire would
• Ferrimagnetic materials have anti-parallel orientation of equal moments of permanent dipoles.
• Consider the following materials Nickel Silver Oxygen Aluminium The correct sequence in the order of decreasing permeability is
• The mass of proton and electron are
• When an atom of polarizability a is placed in an electric field E, the energy stored in atom is 0.5 a E2.
• If ω0 is the angular frequency of rotation of electron in the absence of magnetic field, the angular frequency ω, when a magnetic field B is acting is ω ≅ ω0 + (e/2m)B.