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Welcome to the Modulation and Coding Trade off MCQs Page

Dive deep into the fascinating world of Modulation and Coding Trade off with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Modulation and Coding Trade off, a crucial aspect of Digital Communication. In this section, you will encounter a diverse range of MCQs that cover various aspects of Modulation and Coding Trade off, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Digital Communication.

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Modulation and Coding Trade off MCQs | Page 5 of 13

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Q41.
Which determines the error performance in TCM?

a.

Reduced distance

b.

Free distance

c.

Bandwidth

d.

None of the mentioned

Discuss
Answer: (b).Free distance
Q42.
The TCM decoder uses

a.

Minimum likelihood detector

b.

Maximum likelihood detector

c.

Does not use redundant bits

d.

None of the mentioned

Discuss
Answer: (b).Maximum likelihood detector
Q43.
Flat top sampling of low pass signals

a.

Gives rise to aperture effect

b.

Implies over sampling

c.

Leads to aliasing

d.

Introduces delay distortion

Discuss
Answer: (a).Gives rise to aperture effect
Q44.
In a delta modulation system, granular noise occurs when the

a.

Modulating signal increases rapidly

b.

Pulse rate decreases

c.

Pulse amplitude decreases

d.

Modulating signal remains constant

Discuss
Answer: (d).Modulating signal remains constant
Q45.
A PAM signal can be detected using

a.

Low pass filter

b.

High pass filter

c.

Band pass filter

d.

All pass filter

Discuss
Answer: (a).Low pass filter
Q46.
Coherent demodulation of FSK signal can be performed using

a.

Matched filter

b.

BPF and envelope detectors

c.

Discriminator

d.

None of the mentioned

Discuss
Answer: (a).Matched filter
Q47.
The use of non uniform quantization leads to

a.

Reduction in transmission bandwidth

b.

Increase in maximum SNR

c.

Increase in SNR for low level signals

d.

Simplification of quantization process

Discuss
Answer: (c).Increase in SNR for low level signals
Q48.
Which of the following requires a synchronizing signal?

a.

Single channel PPM system

b.

PAM

c.

DM

d.

All of the mentioned

Discuss
Answer: (b).PAM
Q49.
A PWM signal can be generated by

a.

An astable multi vibrator

b.

A monostable multi vibrator

c.

Integrating a PPM signal

d.

Differentiating a PPM signal

Discuss
Answer: (b).A monostable multi vibrator
Q50.
TDM is less immune to cross-talk in channel than FDM.

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (b).False
Page 5 of 13

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