Question # 1

A transistor has:

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Two regions

Three regions

Single regions

Four regions

Conversion of A.C into D.C is called:

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Compton effect

Rectification

Amplification

Pair production

Output resistance of an op amp is

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High

Low

Zero

Equal to input resistance

When transistor are used in digital circuits they usually operate in the :

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Active region

Break down region

Saturation & cutoff regions

Linear region

Which device is used as a rectifier?

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Capacitor

Transistor

Diode

Transformer

A diode characteristic curve is a plot between

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Current and time

Voltage and time

Voltage and current

Forward voltage and reverse voltage

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

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Minority charge carriers

Majority charge carriers

Electrons

Protons

X=A+B is the mathematical notation for.

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OR gate

NOR gate

NAND gate

AND gate

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

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Rectifier

Transistor

Battery

Diode

Which factor does not affect the conductivity of PN-Junction diode.

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Doping

Temperature

Voltage

Pressure

The central region of a transistor is called.

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Emitter

Collector

Base

Neutral

Transistor was invented by:

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Bardeen

Micheal faraday

Lenz

Newton

The P.D develop in case of silicon is:

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0.7V

0.3V

0.5V

0.9V

In a certain circuit, I_{B = 40 µA,}I_C= 20 mA

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450 amp

0.45 amp

5 m amp

500 amp

Photo diode is used for detection of.

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Heat

Magnet

Current

Light

Rectification is the process of converting.

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D.C. into A.C.

A.C. in to D.C.

Low signal to high

High signal to low

The use of LDR is in the circuit of.

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Logic gate

Rectifier

Oscillator

High Switch

Which component of the transistor has greater contrition of impurity.

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Base

Emitter

Collector

Emitter and collector

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