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 10 of 120

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Q91.
AM amplifier having noise figure of 20 dB and available power gain of 15 dB is followed by a mixer circuit having noise figure of 9 dB. The overall noise figure as referred to input in dB is
Discuss
Answer: (a).10.44
Q92.
Which one of the following is non-resonant antenna?
Discuss
Answer: (d).Rhombic antenna
Q93.
The efficiency of using a binary system for selection of 1 out of 13 equally probable events is
Discuss
Answer: (a).100%
Q94.
The most suitable method for detecting a modulated signal g(t) = (3 to 6 cos 2ฯ€fmt) cos 2ฯ€fct is
Discuss
Answer: (a).envelope detector
Q95.
A total of 16 equally probable events exist. If it is required to select one out of them, the number of required bits is

a.

2

b.

4

c.

3

d.

5

Discuss
Answer: (b).4
Q96.
When modulation index of an AM wave is increased from 0.5 to 1, the transmitted power
Discuss
Answer: (c).increases by 33.3%
Q97.
Quantizing error occurs in
Discuss
Answer: (c).PCM
Q98.
In audio cassettes the width of each recording track is
Discuss
Answer: (b).2.5 mm
Q99.
The most commonly used transistor amplifier circuit is
Discuss
Answer: (c).CE
Q100.
When energy is fed into open wire transmission line the energy may get dissipated due to
Discuss
Answer: (d).all of the above