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MOBILE COMMUNICATION UNIT 1

Authored by CHANDRASEKARAN R

Engineering

University

Used 1+ times

MOBILE COMMUNICATION UNIT 1
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40 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the two ray model, if the power of the transmitter increases, the received power will

Increase

Decrease

Stay the same

become zero

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Diffraction occurs when the wave hits the __________ surfaces

sharp edge

rough

flat

smooth

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When a signal hits the sharp edge of a hill which of the following occurs?

Reflection

Diffraction

Scattering

Refraction

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Scattering happens when a wave encounters:

A large wall

A small object or rough surface

Open space

High voltage

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the free space model, the received power decreases with the square of

Frequency

Transmit power

Distance

Antenna height

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Small scale fading is caused by ______________

Drag shift

Doppler shift

Vertical shift

Horizontal shift

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which phenomenon occurs when a radio wave hits objects much smaller than its wavelength?

Reflection

Diffraction

Absorption

Scattering

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