In van der walls crystals, there exists a high degree of stability of the outer electron shell.
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ECE · all questionsMaterials And Components
Materials And Components
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On the basis of the type of chemical bonds, solids may be classified into
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Which of the following are true for relative dielectric constant?
1. It is dimensionless.
2. It is equal to 1 for vacuum.
3. It is equal to 1 for all substances.
1. It is dimensionless.
2. It is equal to 1 for vacuum.
3. It is equal to 1 for all substances.
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In an intrinsic semiconductor, at a given temperature T
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The resistance of a photoconductor
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Electrical contact materials used in switches, brushes, relay must possess
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The merger of hole and free electron is called
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Ferrimagnetic materials have anti parallel orientation of equal moments of permanent dipoles.
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In a metal, the valence electrons
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Wood is a diamagnetic material.
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The number of protons in a copper atom are
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With increase in temperature, the electrical conductivity would
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If the number of atoms per unit volume of a monoatomic gas changes, the dielectric constant still remains constant.
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The elements which become superconducting at extremely low temperatures are
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The number of protons in a silicon atom are
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The residual resistivity of a binary alloy at 0 K is
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Nickel is a non-magnetic material.
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The most important set of specifications of transformer oil include
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If a small amount of Cu is added to Ni conductor, then
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The fact that domains exhibits spontaneous magnetisation is
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