In an intrinsic semiconductor, at a given temperature T

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

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

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 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

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

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 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

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Materials and Components
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 and 3 only

1, 2 and 3

1 and 2 only

2 and 3 only

1 and 3 only

1, 2 and 3

1 and 2 only

2 and 3 only

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Materials and Components
If a small amount of Cu is added to Ni conductor, then

Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects

Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres

Resistivity of Ni remains the same

Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni

Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects

Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres

Resistivity of Ni remains the same

Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni

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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

dielectric strength and viscosity

dielectric strength and flash point

viscosity and flash point

flash point and viscosity

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Materials and Components
The fact that domains exhibits spontaneous magnetisation is

Curie-Weiss law

Second hypothesis is of Weiss

First hypothesis is of Curie

Boltzmann’s statistics

Curie-Weiss law

Second hypothesis is of Weiss

First hypothesis is of Curie

Boltzmann’s statistics

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Materials and Components
Nickel is a non-magnetic material.

False

True

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Materials and Components

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

Materials and Components 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.

Materials and Components If a small amount of Cu is added to Ni conductor, then

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

Materials and Components The fact that domains exhibits spontaneous magnetisation is

Materials and Components Nickel is a non-magnetic material.

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

Materials and Components
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.

Materials and Components
If a small amount of Cu is added to Ni conductor, then

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

Materials and Components
The fact that domains exhibits spontaneous magnetisation is

Materials and Components
Nickel is a non-magnetic material.