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.
Which of the following microphones is the cheapest?
Discuss
Answer: (d).Carbon
Q272.
If a line is terminated in characteristic impedance Zโ‚€, the input impedance measured at the input will be
Discuss
Answer: (a).Zโ‚€
Q273.
In a TV, the output from RF tuner is about
Discuss
Answer: (b).1000 ฮผV
Q274.
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
Q275.
A signal is sampled at 8 kHz and is quantized using 8 bit uniform quantizer. Assuming SNRq for a sinusoidal signal, the correct statement for PCM signal with a bit rate of R is
Discuss
Answer: (b).R = 64 KbPs, SNRq = 49.8 dB
Discuss
Answer: (d).two rotating video heads
Q277.
An antenna has a resistance of 50 ฮฉ and an equivalent noise resistance of 30 ฮฉ The noise figure in decibels is
Discuss
Answer: (b).2 dB
Q278.
An MTI radar operating at 5 GHz has a PRF of 800 pps. The lowest blind speed is
Discuss
Answer: (a).48 m/s
Q279.
For maximum output the width of air gap of audio head should be
Discuss
Answer: (b).half the wavelength
Q280.
The simplest mixer circuit for public address system uses
Discuss
Answer: (b).variable resistances