ELECTRONIC DEVICES AND CIRCUITS QUIZ

If too large current passes through the diode

Excessive heat may damage the diode

Diode will emit light

All electrons will leave

All holes will freeze

TRUE ANSWER : ?
YOUR ANSWER : ?

Fermi level is the amount of energy in which

Must be given to an electron move to conduction band

A hole can have at room temperature

An electron can have at room temperature

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

In a bipolar transistor, the base collector junction has

Forward bias

Zero or forward bias

Reverse bias

Zero bias

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

TRUE ANSWER : ?
YOUR ANSWER : ?

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 : ?
YOUR ANSWER : ?

For a P-N diode, the number of minority carriers crossing the junction depends on

Forward bias voltage

None of these

Rate of thermal generation of electron hole pairs

Potential barrier

TRUE ANSWER : ?
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For a NPN bipolar transistor, what is the main stream of current in the base region?

Drift of holes

Drift of electrons

Diffusion of holes

Diffusion of electrons

TRUE ANSWER : ?
YOUR ANSWER : ?

In a bipolar transistor, the emitter base junction has

Zero or reverse bias

Zero bias

Forward bias

Reverse bias

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following is not a characteristic of a ferroelectric material?

No hysteresis

Ferroelectric characteristic only above the curie point

High dielectric constant

Electric dipole moment

TRUE ANSWER : ?
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In a semiconductor diode, the barrier offers opposition to

Majority carriers in both regions

Free electrons in N-region only

Holes in P-region only

Majority as well as minority carriers in both regions

TRUE ANSWER : ?
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