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 15 of 120

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Q141.
The power to the portable unit of a cordless telephone is provided by
Discuss
Answer: (c).rechargeable cells
Q142.
In a AM wave the carrier and one of the side bands is suppressed. If m = 0.5, the percentage saving in power is
Discuss
Answer: (c).94.4%
Discuss
Answer: (d).All of the above
Q144.
Assertion (A): A balun is an RF impedance matching transformer.

Reason (R): Sometimes a booster amplifier is used with a TV set.
Discuss
Answer: (b).Both A and R are correct but R is not correct explanation of A
Q145.
In a TV, studio the function of vision switcher is to
Discuss
Answer: (a).edit television programs
Q146.
Y signal has maximum percentage of
Discuss
Answer: (c).green colour
Q147.
To ensure good transient response in audio systems the natural frequencies should be
Discuss
Answer: (c).above 15 kHz
Q148.
Consider the following features of monochrome TV

1. Number of lines per picture - 625
2. Interlace ratio - 2 : 1
3. Aspect ratio - 4 : 3
4. Channel bandwidth - 8 MHz

As regards CCIR system B, which of the above are correct?
Discuss
Answer: (b).1, 2, 3
Q149.
In the absence of noise, if C is channel capacity in bits/s, ฮดf is channel bandwidth in Hz and N is number of coding levels. Then
Discuss
Answer: (c).C = 2 (ฮดf) logโ‚‚ N
Q150.
The open loop gain of an amplifier is 50 but is likely to change by 20%. If negative feedback with ฮฒ = 0.1 is used, the change in gain will be about
Discuss
Answer: (c).4%