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 28 of 120

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Q271.
A message signal with bandwidth 10 kHz is lower sideband SSB modulated with carrier frequency fc1 = 10โถ Hz. The resulting signal is then passed though a narrow band frequency modulator with carrier frequency fc2 = 10โน Hz. The bandwidth of the output would be
Discuss
Answer: (b).2 x 10โถ Hz
Q272.
In a PCM system, if the code word length is increased from 6 to 8 bits, the signal to quantization noise ratio improves by the factor.
Discuss
Answer: (c).16
Q273.
For 10 bit PCM system, the signal to quantization noise ratio is 62 dB. If the number of bits is increased by 2, then the signal to quantization noise ratio will
Discuss
Answer: (b).increased by 12 dB
Discuss
Answer: (d).through a transformer having one stationary and one rotatory winding
Discuss
Answer: (c).has no effect on the maximum range
Discuss
Answer: (a).larger bandwidth
Q277.
Which of the following microphones is the cheapest?
Discuss
Answer: (d).Carbon
Q278.
If a line is terminated in characteristic impedance Zโ‚€, the input impedance measured at the input will be
Discuss
Answer: (a).Zโ‚€
Q279.
In a TV, the output from RF tuner is about
Discuss
Answer: (b).1000 ฮผV
Q280.
24 telephone channels, each band limited to 3.4 kHz, are to be time division multiplexed by using PCM, calculate the bandwidth of PCM system for 128 quantization levels and an 8 KHz sampling frequency
Discuss
Answer: (d).1.54 MHz