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 82 of 120

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Q811.
Which of the following is not correct?

a.

In SSB amplitude modulated system, the transmitter circuit has to be more stable leading to better reception

b.

In SSB amplitude modulated system more channel space is available as compared to double sideband amplitude modulated system

c.

In SSB amplitude modulated system the signal is more noise resistant as compared to double sideband system

d.

An SSB-AM system requires lesser power (for the same signal strength) as compared to DSB-AM system

Discuss
Answer: (a).In SSB amplitude modulated system, the transmitter circuit has to be more stable leading to better reception
Q812.
Assertion (A): Data communication using digital data must be very accurate.

Reason (R): In analog signals redundancy is available but in digital signals redundancy is not available.

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: (a).Both A and R are correct and R is correct explanation of A
Q813.
The number of repeaters in a coaxial cable link depends on

a.

system bandwidth

b.

separation of equalizers

c.

the number of coaxial cables in the tube

d.

none of the above

Discuss
Answer: (a).system bandwidth
Q814.
The overall noise temperature Te, absolute temperature T and noise figure F are related as

a.

Te = T(F - 1)

b.

Te = F(T - 1)

c.

T = Te(F - 1)

d.

Te = (T)(F)

Discuss
Answer: (a).Te = T(F - 1)
Q815.
In binary data transmission DPSK is preferred to PSK because

a.

a coherent carrier is not required to the generated at the receiver

b.

for a given energy per bit, the probability for zero is less

c.

the 180° phase shifts of the carrier

d.

more protection is provided against impulse noise

Discuss
Answer: (a).a coherent carrier is not required to the generated at the receiver
Q816.
A basic group B

a.

consists of five super groups

b.

has a frequency range of 60 to 108 kHz

c.

consists of erect channels only

d.

is formed at group translating equipment

Discuss
Answer: (b).has a frequency range of 60 to 108 kHz
Q817.
By the use of which of the following the PPM can be converted to PWM?

a.

A stable multivibrator

b.

Integrator

c.

Monostable multivibrator

d.

Bistable Multivibrator

Discuss
Answer: (d).Bistable Multivibrator
Q818.
In VCR the luminance signal is recorded by

a.

frequency modulation

b.

phase modulation

c.

amplitude modulation

d.

direct recording

Discuss
Answer: (a).frequency modulation
Q819.
Assertion (A): In digital communication data is coded prior to being transferred.

Reason (R): A number of codes for digital data processing are available.

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: (b).Both A and R are correct but R is not correct explanation of A
Q820.
In FM modulation pre-emphasis is done for

a.

high frequency components

b.

low frequency components

c.

middle frequency components

d.

both (a) and (b)

Discuss
Answer: (a).high frequency components
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