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 72 of 120

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Q711.
Assertion (A): In TV scanning is done from left to right and top to bottom.

Reason (R): Interlaced scanning is useful in eliminating flicker

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
Q712.
Three analog signals, having bandwidths 1200 Hz, 600 Hz, 600 Hz are sampled at their Nyquist rates, encoded with 12 bit words, and time division multiplexed. The bit rate for the multiplexed signal is

a.

115.2 kbps

b.

28.8 kbps

c.

57.6 kbps

d.

38.4 kbps

Discuss
Answer: (c).57.6 kbps
Q713.
In a CD player the speed of CD is

a.

constant at 500 rpm

b.

constant at 200 rpm

c.

varies from 200 to 500 rpm

d.

none of the above

Discuss
Answer: (c).varies from 200 to 500 rpm
Q714.
In the output of a DM speech encoder, the consecutive pulses are of opposite polarity during time interval t1 < t < t2. This indicates that during this interval

a.

the input to the modulator is essentially constant

b.

the modulator is going through slope overload

c.

the accumulator is in saturation

d.

the speech signal is being sampled at the Nyquist rate

Discuss
Answer: (a).the input to the modulator is essentially constant
Q715.
A fascimile reproduction has a specification of 200 lines per frame, progressive scanning and 5 frames per second. The time to scan one line is

a.

5 ms

b.

2.5 ms

c.

1 ms

d.

0.1 ms

Discuss
Answer: (c).1 ms
Q716.
The unit of loudness is

a.

phon

b.

sone

c.

decibel

d.

mel

Discuss
Answer: (c).decibel
Q717.
In frequency modulation noise can be further reduced by

a.

increasing deviation

b.

reducing deviation

c.

reducing carrier frequency

d.

increasing signal amplitude

Discuss
Answer: (a).increasing deviation
Q718.
Which one of the following is digital?

a.

Pulse code modulation

b.

Pulse width modulation

c.

Pulse frequency modulation

d.

Pulse position modulation

Discuss
Answer: (a).Pulse code modulation
Q719.
Automatic sensitivity control by target voltage control is easily possible in

a.

Vidicon

b.

Plumbicon

c.

New vicon

d.

both (b) and (c)

Discuss
Answer: (a).Vidicon
Q720.
Pick the odd one out

a.

PPM

b.

PDM

c.

PWM

d.

PLM

Discuss
Answer: (a).PPM
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