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 120 of 120

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Q1191.
For a low level AM system, the amplifiers modulated stage must be
Discuss
Answer: (a).linear devices
Q1192.
Which stage generates RF carrier?
Discuss
Answer: (b).Oscillator
Q1193.
If F(ω) is Fourier transform of f(t), then Fourier transform of f(t) cos² ωct is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Discuss
Answer: (a).a frequency modulated signal
Q1195.
A carrier A cos ωct is modulated by a signal mt A cos ω₁t + m₂ A cos ω₂t + m₃ A cos ω₃t. The total modulated power is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q1196.
If an isotropic source is radiating power P in all directions, the electric field at a distance d from the source is proportional to

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q1197.
Waveform shown in figure is that for
Discuss
Answer: (c).AM-DSB
Q1198.
Assertion (A): In FM the frequency of the carrier is varied by the modulating voltage

Reason (R): FM and PM are two forms of angle modulation.
Discuss
Answer: (b).Both A and R are correct but R is not correct explanation of A