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 75 of 120

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Q741.
In ionosphere incidence angle is 60°. The maximum usable frequency fm is equal to

a.

2fc

b.

fc

c.

0.5 fc

d.

√3 fc

Discuss
Answer: (a).2fc
Q742.
The generally used value of EHV supply in TV receivers is

a.

1 kV per diagonal cm

b.

1 kV per diagonal inch

c.

0.5 kV per diagonal cm

d.

0, 5 kV per diagonal inch

Discuss
Answer: (b).1 kV per diagonal inch
Q743.
The number of channels available in MF band (300 kHz - 3 MHz) for AM modulating signal of 20 kHz is

a.

70

b.

67

c.

100

d.

150

Discuss
Answer: (b).67
Q744.
The function of blend control in stereo system is

a.

to dilute left channel

b.

to dilute right channel

c.

to dilute any of the channels

d.

none of the above

Discuss
Answer: (c).to dilute any of the channels
Q745.
The output resistance of a microphone is 20 ohms. It is to feed a line of impedance 320 ohms. To ensure maximum power transfer, the turn ratio of transformer is

a.

16

b.

256

c.

2

d.

4

Discuss
Answer: (d).4
Q746.
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
Q747.
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
Q748.
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
Q749.
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
Q750.
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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