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 40 of 120

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Q391.
In amplitude modulation the rms value of radio frequency voltage after 40% modulation is 60 mV. If modulation is 80% the rms value after modulation will be about
Discuss
Answer: (c).66 mV
Discuss
Answer: (b).10โธ Hz
Q393.
Consider the following statements

1. In a pulsed radar, the transmitted pulses are of high frequency
2. In a pulsed radar, the transmitted pulses are of high power
3. In a pulsed radar, the transmitted pulses are of brief duration
4. In a pulsed radar, the transmitted pulses are of square wave shape.

Of the above statements the correct statements are
Discuss
Answer: (b).1, 2 and 3 only
Q394.
Probability density function of thermal noise is
Discuss
Answer: (a).Poisson
Discuss
Answer: (a).Automatic Fine Tuning
Q396.
The smallest change in sound intensity that can be detected by human ear is __________ dB.
Discuss
Answer: (b).3
Discuss
Answer: (a).attenuating the frequencies from 0 to 1.25 MHz
Q398.
An MTI compares a set of received echos with those received during the previous sweep.
Discuss
Answer: (a).True
Q399.
If e = 10 sin(10โธ t + 3 sin 10โด t) then the deviation is
Discuss
Answer: (b).47.7 kHz
Q400.
When a complex signals is used to frequency modulate a carrier, the resulting sideband distribution is
Discuss
Answer: (a).symmetrical about the carrier