Question # 1

Which of the following is used as rectifier;

Choose an answer

semi - conductor diode

resistors

capacitors

Germanium

Word"Computer" is derive from.

Choose an answer

Machine

Calculator

Compute

All of these

Electric signal is converted into digital signal by.

Choose an answer

Key board

Monitor

Scanner

Modem

The frequency of the carrier waver used of radio transmission:

Choose an answer

30 KHZ

40 KHZ

50 KHZ

60 KHZ

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

Choose an answer

Valent shell hole

Doping

Hole

None of these

Digital singles are represented by;

Choose an answer

zero and 1

zero and 10

1 and 2

o and 9

The speed of radio wave is:

Choose an answer

Light

Air

Sound

Rocket

Which element is used to make LED?

Choose an answer

Aluminum

Calcium

sodium

Arsenic

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

Choose an answer

Free electron

Holes

Positive ions

Heat

The substances through which current can pass easily are called:

Choose an answer

conductors

insulators

Semi - conductors

Non - Electrolytes

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

Choose an answer

Ordinary temperature

Low temperature

High temperature

None of these

Who was the inventor of radio system.

Choose an answer

Grahm bell

F. Crick

Charles babbage

Marconi

in binary system. 37 is written as.

Choose an answer

101101

100101

110011

101011

analogue signal is recorded on.

Choose an answer

Magnetic tape

Floppy disk

Hard Disk

C.D

The examples of semi - conductors:

Choose an answer

sodium and potassium

calcium and potassium

Germanium and silicon

carbon and nitrogen

More Classes

Other Links

General Science 10th Class English Medium Chapter 9 Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer