Communication Systems MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Communication Systems, a fundamental topic in the field of Electronics and Communication Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Communication Systems MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Communication Systems mcq questions that explore various aspects of Communication Systems problems. Each MCQ is crafted to challenge your understanding of Communication Systems principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electronics and Communication Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Communication Systems MCQs are your pathway to success in mastering this essential Electronics and Communication Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Communication Systems. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Communication Systems knowledge to the test? Let's get started with our carefully curated MCQs!

Communication Systems MCQs | Page 106 of 120

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Q1051.
As regards BCH code, Hamming code and Reed-Solomon code

a.

BCH and Hamming code are special cases of Reed-Solomon code

b.

Reed-Solomon and Hamming code are special cases of BCH code

c.

BCH and Reed-Solomon code are special case of Hamming code

d.

none of the above

Discuss
Answer: (b).Reed-Solomon and Hamming code are special cases of BCH code
Q1052.
Which of the following form of angle modulation, If e = 10 sin(10⁸ t + 3 sin 10⁴ t)

a.

AM

b.

FM

c.

AM or FM

d.

AM or PCM

Discuss
Answer: (b).FM
Q1053.
The noise performance of a square law demodulator of AM signal is

a.

better than that of an envelope detector

b.

better than that of a synchronous detector

c.

identical with that of a synchronous detector

d.

poorer than that of an envelope detector

Discuss
Answer: (b).better than that of a synchronous detector
Q1054.
In AM the amplitude of carrier components ... while in FM it

a.

remains constant, does not remain constant

b.

does not remain constant ... remains constant

c.

remains constant... also remains constant

d.

does not remain constant, also does not remain constant

Discuss
Answer: (a).remains constant, does not remain constant
Q1055.
In a colour TV receiver, the function of comb filter is

a.

to pass only the clusters of monochrome signal energy while blocking chrome signals

b.

to pass only chrome signals and block monochrome signals

c.

to block both monochrome and chrome signals

d.

none of the above

Discuss
Answer: (a).to pass only the clusters of monochrome signal energy while blocking chrome signals
Q1056.
A communication receiver is

a.

TRF receiver

b.

a superheterodyne receiver

c.

either (a) or (b)

d.

neither (a) nor (b)

Discuss
Answer: (b).a superheterodyne receiver
Q1057.
In PCM, bit duration is defined as

a.

sampling period / total no. of bits

b.

total no. of bits / sampling period

c.

sampling period x total no. of bits

d.

none of these

Discuss
Answer: (a).sampling period / total no. of bits
Q1058.
Assertion (A): If frequency is high, the distance between transmitter and antenna may be an appreciable fraction of wavelength

Reason (R): Wavelength is inversely proportional to frequency.

a.

Both A and R are correct and R is correct explanation of A

b.

Both A and R are correct but R is not correct explanation of A

c.

A is correct but R is wrong

d.

A is wrong but R is correct

Discuss
Answer: (a).Both A and R are correct and R is correct explanation of A
Q1059.
Speeds of sound and radio waves are equal.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q1060.
When Pc is the unmodulated carrier power and Pt is the total power in the modulated wave, then the maximum power in AM wave is

a.

Pt = 1.5 Pc

b.

Pt = 2.5 Pc

c.

Pt = √2

d.

Pt = 2√2 Pc

Discuss
Answer: (a).Pt = 1.5 Pc
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