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 8 of 120

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Q71.
Which of the following is taken as reference antenna for directive gain?
Discuss
Answer: (c).Isotropic
Discuss
Answer: (c).power amplifier
Q73.
When the channel is noisy, producing a conditional probability of error p = 0.5; the channel capacity and entropy function would be, respectively,
Discuss
Answer: (d).0 and 1
Q74.
In CCIR-B system, the time between start of one H syn. pulse and next is
Discuss
Answer: (a).64 ฮผs
Q75.
Counterpoise is used in coils having
Discuss
Answer: (a).high resistivity
Discuss
Answer: (c).voltage nodes and current antinodes as well as current nodes and voltage antinodes coincide
Q77.
If the bandwidth is increased by 2, the ฮณFM ฮณAM (where ฮณ is the ratio of SNR of output to SNR at input, FM is frequency modulation and AM is amplitude modulation) is increased by a factor of

a.

2

b.

3

c.

4

d.

6

Discuss
Answer: (c).4
Q78.
A carrier wave carries information.
Discuss
Answer: (b).False
Q79.
Frequency shift keying is used mostly in
Discuss
Answer: (a).telegraphy
Q80.
A generator is feeding power to a transmission line of characteristic impedance Z0. The line is terminated in impedance ZL. Standing waves will be set up if
Discuss
Answer: (d).both (b) and (c)