MATERIALS AND COMPONENTS QUIZ

In an intrinsic semiconductor, at a given temperature T

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

Any of the above

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

TRUE ANSWER : ?
YOUR ANSWER : ?

Which inductor is linear?

Air cored

Iron alloy cored

Cast iron cored

Sheet steel cored

TRUE ANSWER : ?
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A leakage capacitor can be represented by a capacitance C and resistance R in parallel C.

False

True

TRUE ANSWER : ?
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Debye temperature of metals is

About 200 K

About 10 K

About 600 K

About 2 K

TRUE ANSWER : ?
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With increase in temperature, the electrical conductivity would

Decrease in metals as well as in intrinsic semiconductor

Decrease in metals but increase in intrinsic semiconductor

Increase in metals as well as in intrinsic semiconductor

Increase in metals but decrease in intrinsic semiconductor

TRUE ANSWER : ?
YOUR ANSWER : ?

Many compounds also exhibit semiconducting properties.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

Nickel is a non-magnetic material.

False

True

TRUE ANSWER : ?
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The dielectric losses do not depend on frequency.

False

True

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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.

2 and 3 only

1, 2 and 3

1 and 3 only

1 and 2 only

TRUE ANSWER : ?
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Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is

None of these

Normal to both current and magnetic field

In the same direction as current

In a direction anti parallel to magnetic field

TRUE ANSWER : ?
YOUR ANSWER : ?

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