Question # 1

English word "9" has been divided into ............ segments.

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5

6

7

8

analogue signal is recorded on.

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Magnetic tape

Floppy disk

Hard Disk

C.D

The deficiency of elctrons in outermost shell of silicon atom is called.

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Valent shell hole

Doping

Hole

None of these

Which of the following is an input device:

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key board

printer

monitor

CPU

In P-type semi -conductior, most of the current is due to.

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Free electron

Holes

Positive ions

Heat

How many electrons Guns are used in colour T.V?

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One

Two

Three

Four

The major function of electronic devices is to amplify the ........ signals.

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Stronge electric

Semi strong electric

Both a and c

weak electric

The number of hovering satellites which can send transmissions to all over the world:

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one

Two

Three

Four

The examples of semi - conductors:

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sodium and potassium

calcium and potassium

Germanium and silicon

carbon and nitrogen

Digital singles are represented by;

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zero and 1

zero and 10

1 and 2

o and 9

Word FAX is short form of.

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Facsiline

Facsimile

Fasimile

None of these

The numebr (100)16 in decimal is equal to............. in binary.

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1110100

01011101

1100100

1001001

Revolutionary charges have occur in last ............. years.

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30

40

50

60

Who was the inventor of radio system.

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Grahm bell

F. Crick

Charles babbage

Marconi

In Pure -semi conductors no free electrons are available to conduct electric current at.

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Ordinary temperature

Low temperature

High temperature

None of these

Operation " 2+3" in computer performed by.

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CU

CPU

ALU

None of these

Diodes are used to.

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Convert A.C. into D.C

Convert D.C into A.C

Store Charge

Change voltage

Which of the following is used as rectifier;

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semi - conductor diode

resistors

capacitors

Germanium

the number of (101)₁₀ in decimal is equal to .......... inbinary.

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0101111

0000101

10101101

1100101

Word"Computer" is derive from.

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Machine

Calculator

Compute

All of these

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