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 14 of 120

Q131.
In the absence of noise, if C is channel capacity in bits/s, δf is channel bandwidth in Hz and N is number of coding levels. Then
Discuss
Answer: (c).C = 2 (δf) log₂ N
Q132.
The open loop gain of an amplifier is 50 but is likely to change by 20%. If negative feedback with β = 0.1 is used, the change in gain will be about
Discuss
Answer: (c).4%
Discuss
Answer: (c).Both Bass and Treble control
Q134.
For an ideal 3000 Hz channel, S/N ratio is
Discuss
Answer: (a).3
Q135.
Which of the following types of noise assumes greater importance at high frequencies?
Discuss
Answer: (a).Transit time noise
Q136.
In transistor radio receivers the number of IF amplifier stages are

a.

1

b.

2

c.

4

d.

6

Discuss
Answer: (b).2
Q137.
To relay outdoor remotely located live programs, TV transmitter use
Discuss
Answer: (a).microwave links
Q138.
If each short element of signal occupies 20 ms, the speed is
Discuss
Answer: (b).50 bauds
Discuss
Answer: (b).sin ω₁t - cos ω₂t
Q140.
In ionosphere incidence angle is 60°. The maximum usable frequency fm is equal to
Discuss
Answer: (a).2fc