Question # 1

The gain of transistor amplifier depends upon

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Resistance connected with collector

Resistance connected with base voltage

Input voltage

Output voltage

The gate, which changes the logic level to its opposite level is called

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NOR gate

AND gate

OR gate

NOT gate

Doping is made comparatively larger in

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Emitter

Base

Collector

P -type semi conductor

Conversation of only one half of A.C. into D.C. is called.

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Half wave amplification

Wave amplification

Half wave electrification

Half wave rectification

Which device is used as a rectifier?

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Capacitor

Transistor

Diode

Transformer

The colour of light emitted by a LED depends on.

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It forward biased

Its reverse biased

Unbiased

None of these

Transistor was invented by:

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Bardeen

Micheal faraday

Lenz

Newton

The sensor of light is.

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Transistor

LED

Diode

Light dependent resistance

In case of reverse biasing, current is flown due to:

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Minority charge carriers

Majority charge carriers

Electrons

Protons

Base of transistor is of order:

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10^-11m

10⁶m

10^-8m

10^-6m

Truth table of logic function.

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Summarize its output values only

Tabulates all its input conditions only

Display all its input and output possibility

Is not base on logic algebra

One use of a single p-n junction semiconductor in an electrical circuit is a

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Rectifier

Transistor

Battery

Diode

The average gap for Germanium at 0K is

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1.12 ev

0.02 ev

6.72 ev

7.2 ev

NAND gate represented by:

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X = A. B

X = A+B

X= A.B

X=|A+B|

The potential barrier for silicon is.

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0.7 V

0.5 V

0.3 V

0.9 V

For rectification we use.

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Transformer

Diode

Choke

Generator

Photodiode is used for:

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Detection of current

Detection of heat

Detection of light

Both a & b

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