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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 2 of 13

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Q11.
Which modulation has lower side lobe levels?

a.

QPSK

b.

OQPSK

c.

BPSK

d.

MSK

Discuss
Answer: (d).MSK
Q12.
Which modulation is spectrally more efficient?

a.

BPSK

b.

MSK

c.

QPSK

d.

OQPSK

Discuss
Answer: (b).MSK
Q13.
Which modulation spectrum has narrow main lobe?

a.

QPSK

b.

OQPSK

c.

BPSK

d.

MSK

Discuss
Answer: (a).QPSK
Q14.
Which technique can be used for bandwidth reduction?

a.

BPSK

b.

QPSK

c.

MPSK

d.

MFSK

Discuss
Answer: (c).MPSK
Q15.
QPSK amplitude modulates

a.

Sine function

b.

Cosine function

c.

Sine & Cosine function

d.

None of the mentioned

Discuss
Answer: (c).Sine & Cosine function
Q16.
QAM is a combination of

a.

ASK and FSK

b.

ASK and PSK

c.

PSK and FSK

d.

None of the mentioned

Discuss
Answer: (b).ASK and PSK
Q17.
Which refers to the presence of error correction coding scheme?

a.

Coded

b.

Uncoded

c.

Coded & Uncoded

d.

None of the mentioned

Discuss
Answer: (a).Coded
Q18.
The system will be more bandwidth efficient as WTb decreases.

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (a).True
Q19.
In MPSK, R/W

a.

Increases with increase in M

b.

Increases with decrease in M

c.

Decreases with increase in M

d.

Is not dependent on M

Discuss
Answer: (a).Increases with increase in M
Q20.
In MFSK, R/W

a.

Increases with increase in M

b.

Increases with decrease in M

c.

Decreases with increase in M

d.

Is not dependent on M

Discuss
Answer: (c).Decreases with increase in M
Page 2 of 13

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