Question # 1

Which of the following is a brain of computer?

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Central processing unit

Mouse

Monitor

Hard disc

Which disk consisting of metal plates for recording.

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Floopy

RAM

HARD

CD

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

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Free electron

Holes

Positive ions

Heat

Which of the following is used as rectifier;

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semi - conductor diode

resistors

capacitors

Germanium

America setn two space probes in.

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1979

1920

1976

1957

The conductors having larges resistance are called:

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Fuses

Switches

Resistors

Capacitors

PINSTECH consists of...................... research reactors.

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Two

Three

Four

Five

Laser surgery is of special importance in

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heart operation

kidney operation

liver operation

cancer operation

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

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one

Two

Three

Four

The SI unit of capacitance is:

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Farad

Ampere

Ohm

Newton

The Si unit of power is;

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Joule

Ohm

Watt

Ampere

The constant in Ohm's law is.

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Current

Resistance

Potential difference

Charge

The mass of Beta particle:

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0

4

2

1

The ability to do work is called.

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Power

Force

Energy

All of them

The production capacity of research reactor PARR II is;

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17 kilowatt

27 kilowatt

37 kilowatt

47 kilowatt

The number of hydrogen isotopes;

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3

2

8

10

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