ELECTRONIC DEVICES AND CIRCUITS QUIZ

Power diodes are generally

Silicon diodes

Germanium diodes

None of these

Either of the above

TRUE ANSWER : ?
YOUR ANSWER : ?

At room temperature the current in an intrinsic semiconductor is due to

Ions

Holes

Holes and electrons

Electrons

TRUE ANSWER : ?
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The forbidden energy gap between the valence band and conduction band will be least in case of

Insulators

All of these

Semiconductors

Metals

TRUE ANSWER : ?
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The most commonly used semiconductor material is

None of these

Germanium

Silicon

Mixture of silicon and germanium

TRUE ANSWER : ?
YOUR ANSWER : ?

In the sale of diamonds the unit of weight is carat. One carat is equal to

200 mg

150 mg

500 mg

100 mg

TRUE ANSWER : ?
YOUR ANSWER : ?

Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.

True

False

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YOUR ANSWER : ?

In which of these is reverse recovery time nearly zero?

Zener diode

Tunnel diode

Schottky diode

PIN diode

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When diodes are connected in series to increase voltage rating the peak inverse voltage per junction

may be equal to or less than breakdown voltage

should not exceed one third the breakdown voltage

should not exceed half the breakdown voltage

should not exceed the breakdown voltage

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YOUR ANSWER : ?

The sensitivity of human eyes is maximum at

Violet portion of spectrum

Red portion of spectrum

Green portion of spectrum

White portion of spectrum

TRUE ANSWER : ?
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In a half wave rectifier, the load current flows

For less than fourth cycle

For full cycle

Only for the positive half cycle of the input signal

Only for the negative half cycle of the input signal

TRUE ANSWER : ?
YOUR ANSWER : ?

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