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 58 of 120

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Q571.
In a system using QASK and 4 bits to form a symbol, the required bandwidth is
Discuss
Answer: (c).one-fourth of that in BPSK
Discuss
Answer: (b).the amount of variation of deviation from the original carrier frequency is determined by the frequency of the modulating signal
Q573.
Assertion (A): Radio transmission is by sky waves

Reason (R): Waves having frequencies higher than 30 MHz penetrate the atmosphere and do not return to earth.
Discuss
Answer: (b).Both A and R are correct but R is not correct explanation of A
Discuss
Answer: (b).in anticlockwise motion
Q575.
To avoid objectionable noise in a microwave TV link, the SNR should be about
Discuss
Answer: (c).25 or more
Discuss
Answer: (d).There are more balanced modulators; therefore the carrier is suppressed better
Discuss
Answer: (d).all of the above
Discuss
Answer: (d).1/2 carrier amplitude x modulation index
Q579.
In communication systems the frequency range used for voice is
Discuss
Answer: (d).300 Hz to 3800 Hz
Q580.
As EM waves travel in free space they get
Discuss
Answer: (c).attenuated