MATERIALS AND COMPONENTS QUIZ

As the atoms of rare gases become larger, electronic polarizability

Increases

May increase or decrease

Decreases

Remains the same

TRUE ANSWER : ?
YOUR ANSWER : ?

The residual resistivity of a binary alloy at 0 K is

Product of residual resistivities of component metals

Sum of residual resistivities of component metals

Difference of residual resistivities of component metals

Dependent on the concentration of minor component in the alloy

TRUE ANSWER : ?
YOUR ANSWER : ?

The materials which become polarized on the application of mechanical stress are called piezoelectric.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

A characteristic property of crystal is its periodicity of structure.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

Debye temperature of metals is

About 10 K

About 600 K

About 2 K

About 200 K

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YOUR ANSWER : ?

Which inductor is used at high frequencies?

Iron alloy cored

Ceramic cored

Sheet steel cored

Cast iron cored

TRUE ANSWER : ?
YOUR ANSWER : ?

For making a capacitor it is better to have a dielectric having

Permittivity same as that of air

High permittivity

Permittivity which is neither high nor low

Low permittivity

TRUE ANSWER : ?
YOUR ANSWER : ?

If the number of atoms per unit volume of a monoatomic gas changes, the dielectric constant still remains constant.

False

True

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YOUR ANSWER : ?

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, 2 and 3

2 and 3 only

1 and 2 only

1 and 3 only

TRUE ANSWER : ?
YOUR ANSWER : ?

When a material is in superconducting state and a magnetic field is applied

The superconducting property may be affected and resistivity may increase from zero to a low value

The superconducting property may be destroyed

The material may become an insulator

The superconducting property is not affected

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YOUR ANSWER : ?