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Materials and Components

Materials and Components
Many compounds also exhibit semiconducting properties.

False
True

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Materials and Components
The most important set of specifications of transformer oil include

viscosity and flash point
dielectric strength and flash point
flash point and viscosity
dielectric strength and viscosity

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Materials and Components
The elements which become superconducting at extremely low temperatures are

Relatively poor conductors at room temperature
Insulators at room temperature
Ferromagnetic at room temperature
Good conductors at room temperature

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Materials and Components
As the atoms of rare gases become larger, electronic polarizability

May increase or decrease
Decreases
Increases
Remains the same

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Materials and Components
In a metal, the valence electrons

Are not shared
Either B or C
Are shared only between neighbouring atoms
Are shared by all atoms

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Materials and Components
Debye temperature of metals is

About 2 K
About 200 K
About 600 K
About 10 K

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