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 102 of 120

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Q1011.
Identical telephone numbers in different parts of a country are distinguished by their
Discuss
Answer: (a).area codes
Q1012.
Consider the following statements as regards pulse repetition frequency

1. Pulse interval should be as large as possible so that a pulse returns before next pulse is transmitted
2. Greater the number of pulses reflected from a target, greater is the probability of distinguishing it from the noise

Which of the above are correct?
Discuss
Answer: (c).both 1 and 2
Q1013.
Which gives minimum probability of error?
Discuss
Answer: (c).PSK
Q1014.
If there are M messages and each message has probability p = 1/m, the entropy is
Discuss
Answer: (c).logโ‚‚ M
Q1015.
Narrowband FM signal can be considered to be equal to
Discuss
Answer: (b).AM
Q1016.
The spectral component of noise associated with kth frequency is given, in the limit as ฮ”f โ†’ 0 by nk(t) written as

nk(t) = Ck cos (2ฯ€k ฮ”ft + ฮธk)

Consider the following statements as regards Ck and ฮธk

1. Ck and ฮธk are independent of one another
2. Ck and ฮธk are independent of the amplitude of a spectral component at a different frequency
3. Ct and ฮธk are independent of the phase of a spectral component at a different frequency

Which of the above statements are correct?
Discuss
Answer: (c).1, 2, 3
Discuss
Answer: (d).approximately 10% of its central frequency
Q1018.
In pulse code modulation, if the signal is sampled at the rate of f and the number of pulses in one code group is p, then the number of pulses per second will be
Discuss
Answer: (d).pf
Discuss
Answer: (c).both sideband have same Phase Difference
Q1020.
When number of quantization levels are two, then the average transmission power in NRZ polar signalling is __________ that of NIRZ unipolar signalling.
Discuss
Answer: (c).1/8