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 21 of 120

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Q201.
The direction of pick up in a CD is

a.

linear from centre towards edge

b.

linear from edge to centre

c.

nonlinear from centre to edge

d.

nonlinear from edge to center

Discuss
Answer: (a).linear from centre towards edge
Q202.
A (75 - j 50) ฮฉ load is connected to a coaxial line of Z0 = 75 ฮฉ at 10 GHz. The best method of matching consists of using

a.

a capacitance at some specific distance from load

b.

a short circuited stub at some specific distance from load

c.

an inductance at load

d.

a short circuited stub at load

Discuss
Answer: (d).a short circuited stub at load
Q203.
Consider the following test signal patterns

1. Ramp
2. Grill
3. Grey shades
4. Sine pulse
5. Picture line up generating equipment

Which of the above are used in TV studios?

a.

All

b.

1, 2 and 3 only

c.

1, 2 and 5 only

d.

2, 3, 4 and 5 only

Discuss
Answer: (a).All
Q204.
If aspect ratio is 4/3 and number of lines in each frame is 625, the number of picture elements in one frame is

a.

4/3 x 625

b.

4/3(625)²

c.

625²

d.

3/4(625)²

Discuss
Answer: (b).4/3(625)²
Q205.
Which stage generates RF carrier?

a.

Amplifier

b.

Oscillator

c.

Power supply

d.

All of the above

Discuss
Answer: (b).Oscillator
Q206.
If F(ฯ‰) is Fourier transform of f(t), then Fourier transform of f(t) cos² ฯ‰ct is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q207.
The circuit of figure give an output which is

a.

a frequency modulated signal

b.

an amplitude modulated signal

c.

a phase modulated signal

d.

none of the above

Discuss
Answer: (a).a frequency modulated signal
Q208.
A carrier A cos ฯ‰ct is modulated by a signal mt A cos ฯ‰โ‚t + mโ‚‚ A cos ฯ‰โ‚‚t + mโ‚ƒ A cos ฯ‰โ‚ƒt. The total modulated power is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q209.
If an isotropic source is radiating power P in all directions, the electric field at a distance d from the source is proportional to

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q210.
Waveform shown in figure is that for

a.

FM

b.

PCM

c.

AM-DSB

d.

AM-SSB

Discuss
Answer: (c).AM-DSB
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