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 105 of 120

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Q1041.
A three stage telephone switching structure is to have 128 input and 128 output terminals. It has been found that at peak time the utilization probability is 0.1. The number of intermediate links required for non-blocking configuration is 15. If the actual number of intermediate links is 5, the probability of blocking of call is
Discuss
Answer: (c).0.2%
Q1042.
One of the advantages of base modulation over collector modulation of a transistor class C amplifier is
Discuss
Answer: (d).the lower modulating power requirement
Q1043.
If carrier modulated by a digital bit stream had one of the possible phases of 0°, 90°, 180°, 270°, then the modulation is called.
Discuss
Answer: (b).QPSK
Q1044.
In FM, when the bandwidth is doubled, the signal to noise ratio improves by a factor of
Discuss
Answer: (c).6 dB
Discuss
Answer: (d).two sidebands as well as a trace of carrier are transmitted
Discuss
Answer: (a).Amplitude Modulated-Suppressed Carrier
Q1047.
FM has poor efficiency than
Discuss
Answer: (b).AM-SC
Q1048.
The number of spectral component when two sine wave of same frequency multiplied is
Discuss
Answer: (b).3
Q1049.
Public address systems generally use electret microphones.
Discuss
Answer: (a).True
Q1050.
The noise at the input to an ideal frequency detector is white. The detector is operating above threshold. The power spectral density of the noise at the output is
Discuss
Answer: (d).Gaussian