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 93 of 120

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Q921.
Speeds of sound and radio waves are equal.
Discuss
Answer: (b).False
Q922.
When Pc is the unmodulated carrier power and Pt is the total power in the modulated wave, then the maximum power in AM wave is
Discuss
Answer: (a).Pt = 1.5 Pc
Q923.
Thermal noise is passed through an ideal low pass filter having cut off at fc = ฯ‰ Hz. The auto-correlation value of the noise at the output of the filter is given as
Discuss
Answer: (c).sin c function over the range -โˆž โ‰ค t โ‰ค โˆž
Q924.
The tuned circuit of the oscillator in a simple AM transmitter employs a 50 H coil and a 1 nanofarad capacitor. If the oscillator output is the carrier frequency will be
Discuss
Answer: (d).712 kHz
Q925.
In a low level AM system, the amplifier which follows the modulated stage must be the
Discuss
Answer: (a).linear device
Q926.
In a square law modulator, the carrier frequency should be __________ times than the highest modulating frequency.

a.

1

b.

2

c.

4

d.

3

Discuss
Answer: (d).3
Discuss
Answer: (a).Compatible Single Sideband
Q928.
Tropospheric scatter is used with frequencies in the range of
Discuss
Answer: (b).HF
Discuss
Answer: (d).voltage for which frequency, phase or amplitude is varied
Q930.
Which one of the following blocks is not common in both AM and FM receivers?
Discuss
Answer: (d).Slope detector