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 24 of 120

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Q231.
In TV transmitter, visual exciter may consist of

1. Video processing unit
2. Visual modulator
3. VSB filter
4. Delay equaliser
5. Frequency converter

Which of the above are actually a part of visual exciter?
Discuss
Answer: (d).1, 2, 3, 4 and 5
Q232.
The positive peak of an AM wave is 16 V and the minimum value is 4 V Assuming single tone modulation, the modulation index is
Discuss
Answer: (a).0.6
Q233.
In a circuit the value of resistor is made four times. The noise voltage generated by this resistance will
Discuss
Answer: (a).be doubled
Q234.
A resistor of 10 kฮฉ has an rms noise voltage of 1 mV under a certain set of conditions. A resistor of 20 kฮฉ under the same conditions will have an rms noise voltage of
Discuss
Answer: (c).1.414 mV
Q235.
Assertion (A): EM waves are attenuated as they travel outward from a source

Reason (R): Both field intensity and power density follow inverse square law.
Discuss
Answer: (a).Both A and R are correct and R is correct explanation of A
Discuss
Answer: (a).bandwidth of frequencies having output with in ± 1 dB of the output at 1000 Hz
Q237.
Graphic equaliser system in stereophonic systems generally have
Discuss
Answer: (a).3 or 4 bands
Q238.
An amplifier operating over a frequency range of 18 to 20 MHz has 10 kฮฉ input resistance. At a temperature of 27° C, the noise voltage at input of amplifier is (Boltzman constant k = 1.38 x 10โ€พ²³ J/K)
Discuss
Answer: (a).18.2 ฮผV
Q239.
Some sources of TV programs are

1. TV camera
2. Telecine
3. VTR
4. External signal

Which of the above are actually present in a TV studio?
Discuss
Answer: (a).1, 2, 3 and 4
Discuss
Answer: (b).optical recording and retrieval