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Materials and Components

Materials and Components
Ferrimagnetic materials have anti parallel orientation of equal moments of permanent dipoles.

False
True

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Materials and Components
In solid insulator materials having only one kind of atom, the types of polarization which exist are

Electronic, ionic and permanent
Electronic and ionic
Electronic only

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Materials and Components
Above a certain temperature, the specific heat of a metal becomes constant. This temperature is called

Curie temperature
Transition temperature
Debye temperature
Neel temperature

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Materials and Components
A vacant electronic state moves in the same direction as would a positive charge carrier.

True
False

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

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

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Materials and Components
When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability.

True
False

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