Piezoelectricity means the slight change in dimensions of a specimen when an electric field is applied.

Materials and Components
Piezoelectricity means the slight change in dimensions of a specimen when an electric field is applied.

True

False

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Materials and Components
The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as

Debye rule

Curie rule

Matthiessen’s rule

Onne’s rule

Debye rule

Curie rule

Matthiessen’s rule

Onne’s rule

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

Insulators at room temperature

Good conductors at room temperature

Ferromagnetic at room temperature

Relatively poor conductors at room temperature

Insulators at room temperature

Good conductors at room temperature

Ferromagnetic at room temperature

Relatively poor conductors at room temperature

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Materials and Components
Which inductor is linear?

Sheet steel cored

Cast iron cored

Air cored

Iron alloy cored

Sheet steel cored

Cast iron cored

Air cored

Iron alloy cored

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Materials and Components
At room temperature the number of conducting electrons in an intrinsic semiconductor

Is about half the number of valence electrons

Is a very small fraction of the number of valence electrons

Is small as compared to the number of valence electrons

Is almost equal to the number of valence electrons

Is about half the number of valence electrons

Is a very small fraction of the number of valence electrons

Is small as compared to the number of valence electrons

Is almost equal to the number of valence electrons

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Materials and Components
In an intrinsic semiconductor, at a given temperature T

The number of electrons-hole pairs generated per second due to thermal motion are equal to the number of electron-hole pairs lost per second due to recombination

Any of the above

The number of electron-hole pairs generated per second due to thermal motion is always less than the number of electron-hole pairs lost per second due to recombination

The number of electron hole pairs generated per second due to thermal motion is always more than the number of electron-hole pairs lost per second due to recombination

The number of electrons-hole pairs generated per second due to thermal motion are equal to the number of electron-hole pairs lost per second due to recombination

Any of the above

The number of electron-hole pairs generated per second due to thermal motion is always less than the number of electron-hole pairs lost per second due to recombination

The number of electron hole pairs generated per second due to thermal motion is always more than the number of electron-hole pairs lost per second due to recombination

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Materials and Components

Materials and Components Piezoelectricity means the slight change in dimensions of a specimen when an electric field is applied.

Materials and Components The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as

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

Materials and Components Which inductor is linear?

Materials and Components At room temperature the number of conducting electrons in an intrinsic semiconductor

Materials and Components In an intrinsic semiconductor, at a given temperature T

Materials and Components
Piezoelectricity means the slight change in dimensions of a specimen when an electric field is applied.

Materials and Components
The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as

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

Materials and Components
Which inductor is linear?

Materials and Components
At room temperature the number of conducting electrons in an intrinsic semiconductor

Materials and Components
In an intrinsic semiconductor, at a given temperature T