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 73 of 120

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Q721.
In phase modulation, the phase deviation is

a.

proportional to the amplitude of the signal and varies with frequency

b.

remains constant while amplitude and frequency of signal varies

c.

proportional to the amplitude of the signal and independent of the frequency

d.

none of the above

Discuss
Answer: (c).proportional to the amplitude of the signal and independent of the frequency
Q722.
The noise generated by a resistor depends upon

a.

its operating temperature

b.

its resistance value

c.

both (a) and (b)

d.

bandwidth

Discuss
Answer: (b).its resistance value
Q723.
A source has two symbols x1 and x2 with probabilities pi and pr. If a new source with four symbols is generated from the above source, the new symbol probabilities will be (∈ is a number such that 0 < ∈ < 1)

a.

p1, p2, p1, p2

b.

p1, p1, p2, p2

c.

(1 - ∈)p1, (1 - ∈) p2, p1, p2

d.

p1/4, p2/4, p1/4, p2/4

Discuss
Answer: (c).(1 - ∈)p1, (1 - ∈) p2, p1, p2
Q724.
Coupling and bypass filters can be a source of

a.

low-frequency parasitics

b.

high-frequency parasitics

c.

carrier frequency parasitics

d.

none of the above

Discuss
Answer: (b).high-frequency parasitics
Q725.
Assertion (A): SSB transmitter is generally smaller than AM transmitter

Reason (R): SSB systems mostly use combined transmitter receiver.

a.

Both A and R are correct and R is correct explanation of A

b.

Both A and R are correct but R is not correct explanation of A

c.

A is correct but R is wrong

d.

A is wrong but R is correct

Discuss
Answer: (d).A is wrong but R is correct
Q726.
The VLF, LF and MF antennas are

a.

horizontally polarized

b.

vertically polarized

c.

non linearly polarized

d.

either (a) or (b)

Discuss
Answer: (b).vertically polarized
Q727.
The HV and other voltage supplies for a TV receiver are obtained from IHVT. The full name for this device is

a.

Internal high voltage transformer

b.

Integrated high voltage transformer

c.

Instant high voltage transformer

d.

Interleaved high voltage transformer

Discuss
Answer: (b).Integrated high voltage transformer
Q728.
The main systems used for generation of SSB are

a.

filter method

b.

phase cancellation method

c.

third method

d.

all of the above

Discuss
Answer: (d).all of the above
Q729.
An antenna operates effectively when its dimensions are

a.

of the order of magnitude of wavelength to be transmitted

b.

very small than the magnitude of wavelength to be transmitted

c.

very large than the magnitude of wavelength to be transmitted

d.

either (a) or (b)

Discuss
Answer: (a).of the order of magnitude of wavelength to be transmitted
Q730.
The mobile unit of a mobile telephone is generally in

a.

vehicles

b.

pocket

c.

office

d.

vehicle or pocket

Discuss
Answer: (a).vehicles
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