Communication Systems MCQ Questions & Answers

Home

Competitive Exams

Aptitude English Verbal Reasoning Non Verbal Reasoning General Knowledge(GK) General Science(GS) Data Interpretation(DI) Banking Awareness Current Affairs

Computer & Programming

Computer Fundamentals Networking SQL Database C Programming C++ Programming Java Python

Other Subjects

Commerce Management Law Political Science Psychology Agriculture

Exam Categories

SSC Exams Railway Exams All Exams

Popular Exams

SSC CGL SSC CHSL SSC MTS Railway Group D RRB ALP RRB Technician RRB Section Controller

Engineering Subjects

Computer Science Electronics & Communication Mechanical Engineering Civil Engineering Electrical Engineering

More Engineering

Chemical Engineering Automobile Engineering Biotechnology Mining Engineering Geological Engineering

Engineering Core

Engineering Mathematics Engineering Physics Engineering Chemistry Metallurgical Engineering

Computer Fundamentals

Computer Fundamentals Networking Database SQL MySQL

Programming

C Programming C++ Programming Java Python PHP JavaScript

Advanced

Artificial Intelligence Machine Learning Data Science Cloud Computing Hadoop IoT

Graduation & PG

Commerce Management Law Mass Communication Political Science Psychology

Resources

Current Affairs Interview Blog

Learn Communication Systems MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Communication Systems MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-3 section-1

Each section contains 100 MCQs on Communication Systems .

In Pulse Code Modulation system

A) Large bandwidth is required B) Quantising noise can be overcome by companding C) Quantising noise can be reduced by decreasing the number of standard levels D) Suffers from the disadvantage of its incompatibly with TDM

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 106 Hz. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are

A) 200 and 1.01 B) 200 and 10.01 C) 200 and 100.1 D) 200 and 200

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

DVD uses

A) Laser beam for both recording and playback B) Laser beam for recording and video head for playback C) Video head for recording and laser beam for playback D) None of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

If output power of a radio receiver is doubled, its volume is increased by __________ dB.

A) 2 B) 3 C) 1 D) -3

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

For attenuation of high frequencies we should use

A) Shunt capacitance B) Series capacitance C) Inductance D) Resistance

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The disadvantage of FM over AM is that

A) High output power is needed B) High modulating power is needed C) Noise is very high for high frequency D) Large bandwidth is required

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

VSB modulation is preferred in TV because

A) It reduces the bandwidth requirement to half B) It avoids phase distortion at low frequencies C) It results in better reception D) None of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which one of the following is analog?

A) PCM B) PWM C) Delta modulation D) Differential PCM

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

As per Shannon-Hartley theorem, a noise less Gaussian channel has

A) Zero capacity B) Infinite capacity C) Small capacity D) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

In a TV receiver antenna the length of reflector rod

A) Is the same as that of dipole B) Is less than that of dipole C) Is more than that of dipole D) May be equal, more or less than that of dipole

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

1 2 3 4 5 6 7 8 9 10

Communication Systems MCQ Questions & Answers | ECE