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 2 of 120

Q11.
In a two stage cascade amplifier the equivalent noise temperatures are Te1 and Te2. If the gains of the two stages are G1 and G2, the overall noise temperature Te is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q12.
A π matching network for coupling the transmitter output of the antenna is shown in figure.
In this C₂ should be tuned for
Discuss
Answer: (b).maximum D.C. plate current
Discuss
Answer: (c).A represents AM and B represents FM
Q14.
For a three stage cascaded amplifier, having gains of G₁, G₂ and G₃ and noise figures of F₁, F₂, F₃ the overall noise figure

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q15.
Which of the following could be the equation for non-linear resistor shown in figure?
Discuss
Answer: (a).a + be + ce² + de³
Q16.
Figure shows the arrangement of
Discuss
Answer: (c).AM-DSB
Q17.
Noise figure is defined as

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q18.
If N is the number of binary digits needed to assign individual binary code designations to the M quantization levels, the signal to quantization noise ratio S0/Nq in PCM is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q19.
If Vs is signal voltage, Vn is noise voltage, signal to noise ratio S/N is defined as

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q20.
The PDF of a Gaussian random variable X is given by following equation. The probability of the event {X = 4} is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
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