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 19 of 120

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Q181.
In the FM wave described by equation v = 15 sin (4 x 10โธ t + 3 sin 1100 t), the carrier frequency and signal frequency respectively are
Discuss
Answer: (a).63.66 MHz and 175 Hz
Q182.
In the television system in India, the odd and even fields are scanned
Discuss
Answer: (b).25 times each but alternately
Q183.
Consider the following:

1. A signal f(t) and its Hilbert transform fh(t) have the same energy density spectrum
2. A signal f(t) and its Hilbert transform, fh(t) have the same auto correlation function
3. A signal f(t) and its Hilbert transform are mutually orthogonal

Which of the above are true?
Discuss
Answer: (a).1, 2 and 3
Q184.
Vidicon and plumbicon operate on the principle of
Discuss
Answer: (c).photo voltaic
Q185.
A TV receiver has a width of 60 cm. The aspect ratio is 4/3. The required EHT supply is about
Discuss
Answer: (a).29 kV
Discuss
Answer: (c).cuts off audio amplifier when carrier is absent
Q187.
Consider the draw backs

1. Slope overload
2. Serration noise
3. Granular noise

Which of these draw backs does Delta modulation have?
Discuss
Answer: (c).1 and 3 only
Q188.
It is required to increase the maximum range of a radar by a factor of two. The peak power transmitted in the radar system has to be increased by a factor of

a.

2

b.

4

c.

8

d.

16

Discuss
Answer: (a).2
Discuss
Answer: (d).to find the desired value of carrier frequency with frequency deviation
Q190.
A source generates three symbols with probabilities 0.25, 0.25, 0.50 at a rate of 3000 symbols per second. Assuming independent generation of symbols, the most efficient source encoder would have average bit rate is as
Discuss
Answer: (b).4500 bits/sec