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.
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
Q92.
A carrier wave carries information.
Discuss
Answer: (b).False
Q93.
Frequency shift keying is used mostly in
Discuss
Answer: (a).telegraphy
Q94.
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)
Q95.
In sound recording the degree of pre-emphasis is about 6 dB/ octave.
Discuss
Answer: (b).False
Q96.
Space wave may be a direct wave or wave reflected from earth.
Discuss
Answer: (b).False
Discuss
Answer: (b).frequency modulation
Q98.
If the frequency of a wave 20 Hz, the time period is
Discuss
Answer: (d).0.05 secs
Discuss
Answer: (c).Pulse Repetition Frequency
Q100.
Which of the following cannot be the Fourier series expansion of a periodic signal?
Discuss
Answer: (c).x(t) = cos t + 0.5