Question # 1

Which statement of the following is false for primary memory?

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The base of primary memory is electronics

This is a random access memory

It gets lost when computer switches off

It is built on laser technology

The substances which do not have free electrons are called:

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None of these

Insulators

Conductors

Semiconductors

A dielectric must be:

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Resistor

Insulator

Good conductor

Semi conductor

In series combination of capacitors, each capacitor will have same:

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Voltage

Charge

Capacitance

Charge and voltage

Power of electric heater is:

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1500W

4750W

100W

50W

Thermocouples convert:

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Heat energy into electrical energy

Heat energy into light energy

Heat energy into mechanical energy

Chemical energy into electrical energy

In liquids and gases the current is due to the motion of:

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Negative charges

Positive charges

Both positive and negative charges

None of these

One joule per coulomb is called:

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Volt

Farad

Ampere

Tesla

Which of the following reasons increase the importance of computer?

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Speedy

Long time storage of memory

Quick decision

All of these

In computer terminology information means.

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any data

raw data

processed data

large data

Application of electrostatic is:

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Car painting

Photocopying

Extracting of dust

All of these

What is fitted in telephone receiver?

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Electromagnet

Diaphragm

Both a and b

None of these

A device which has two way communication is:

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Television

Radio

Hard disk

Mobile phone.

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