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4.7k
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Define Reverberation Time. Write Sabine's Formula and explain the terms in it.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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3.1k
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Calculate magnetic flux density and magnetisation in copper.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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Explain orientational polarization with suitable diagram and write the mathematical expression of orientational polarizability.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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What is the probability of an electron being thermally promoted to conduction band in diamond at 27C, if bandgap is 5.6 eV wide?
engineering physics updated 8.4 years ago by teamques10 ★ 68k
3
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34k
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Define: drift current, diffusion current and mobility of charge carriers.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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Explain the variation in magnetic induction with magnetic field for a ferromagnetic material, Calculate the susceptibility and the permeability.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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Draw the permeability against external magnetic field for a paramagnetic and ferromagnetic material (below Curie temperature).
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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8.0k
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Write three distinct differences between ionic and orientational polarization.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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17k
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Explain the concept of hole in a semiconductor.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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7.0k
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What is Fermi level and Fermi energy? Write Fermi- Dirac distribution function.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
6
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26k
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Explain the origin of electronic, ionic and orientational polarization and temperature dependence of respective polarizability.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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26k
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Explain ionic polarization and obtain polarizability
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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14k
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Mention different types of polarizability in a dielectric. Explain electronic polarizability.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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19k
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What is dielectric polarization and dielectric susceptibility? Find the relation between them.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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Find the flux density, magnetic field intensity and permeability of iron.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
2
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10k
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Prove that in a ferromagnetic material, power loss per unit volume in a hysteresis cycle equals area under the hysteresis loop.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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5.4k
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Why soft magnetic materials are used in core of transformers.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
0
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1
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Write the relation between polarization and dielectric susceptibility and the relation between dielectric susceptibility and dielectric constant.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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49k
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Differentiate between soft and hard magnetic materials.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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1.8k
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Define dielectrics, electric dipole and polarizability.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
6
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66k
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Explain the formation of barrier potential in P-N junction.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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20k
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What is Hall Effect? Mention its significance. How mobility can be determined by using Hall Effect?
engineering physics updated 8.4 years ago by teamques10 ★ 68k
2
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27k
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Show that for intrinsic semiconductors the Fermi level lies midway between the conduction band and the valence band. Draw the energy level diagram as a function of temperature for n-type of semi-c
engineering physics updated 8.4 years ago by teamques10 ★ 68k
0
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6.1k
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What is effective mass? Why the effective mass of holes is more than the effective mass of electron?
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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Explain the formation of depletion region in an unbiased p-n junction.
engineering physics updated 8.4 years ago by teamques10 ★ 68k
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