Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Need for modulation

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.

Relate antenna height and frequency

a)

Inversely proportional

b)

Directly proportional

c)

Equal

2.

Relate power radiated by antenna and frequency

a)

Directly proportional

b)

Inversely proportional

c)

Equal

3.

For minimizing circuit complexity inductance L value must be

a)

Low

b)

High

c)

Any

4.

______ is possible through modulation.

a)

Multiplexing

b)

Demultiplexing

c)

Amplification

5.

Signal quality is improved by

a)

Modulation

b)

Multiplexing

6.

Modulation enables

a)

Wireless communication

b)

Noiseless communication

7.

Who invented Telegraph?

a)

Samuel Morse

b)

Graham Bell

c)

Guglielmo Marconi

8.

Who invented Telephone?

b)

Guglielmo Marconi

c)

Samuel Morse

9.

For low values of L, frequency must be

a)

High

b)

Low

c)

Moderate

10.

Choose the incorrect answer. The benefits of wireless communication include

a)

Low loss

b)

Mobility

c)

Accessibility

d)

Scalability

11.

The signal above is an example of

a)

Analog signal

b)

Digital signal

12.

In which of the following applications is analog communication preferred?

a)

AM/FM radio broadcasting

b)

Internet data transfer