ANALOG ELECTRONICS QUIZ

The major advantage of a photo transistor as compared to a photo diode is its

AC operation.

increased sensitivity.

durability.

response to higher frequencies.

TRUE ANSWER : ?
YOUR ANSWER : ?

When a reverse bias is applied to gate of JFET the depletion region width

is wider near the drain and tapers near source.

is uniform in the channel.

is wider near the source and tapers near the drain.

None of these

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YOUR ANSWER : ?

The gate controls

all of them.

the drain current.

the width of the channel.

the gate voltage.

TRUE ANSWER : ?
YOUR ANSWER : ?

The number of valence electrons in silicon atom are :

3

2

4

1

TRUE ANSWER : ?
YOUR ANSWER : ?

The base-emitter voltage of an ideal transistor is

0.7 V.

0.3 V.

0 V.

1 V.

TRUE ANSWER : ?
YOUR ANSWER : ?

The resistance of pn junction when it is forward biased in the order of

Kilo Ohm

Mega Ohm

None of these

Ohm

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YOUR ANSWER : ?

If=0.98, Ico=6µA and Iβ=100µA for a transistor,then the value of Ic will be

3.2mA

5.2mA

2.3mA

4.6mA

TRUE ANSWER : ?
YOUR ANSWER : ?

The electric current ICBO flows in the

emitter and collector leads.

emitter and base leads.

none of them.

collector and base leads.

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In a normally biased npn transistor, the electrons in the emitter have enough energy to overcome the barrier potential of the

collector - base junction.

recombination path.

base - emitter junction.

base - collector junction.

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YOUR ANSWER : ?

Which of the following does not obey the Ohm's law?

Resistor

Semiconductor

Bilateral device

None of these

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YOUR ANSWER : ?

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