Signals and Systems MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Signals and 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 Signals and 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 Signals and Systems mcq questions that explore various aspects of Signals and Systems problems. Each MCQ is crafted to challenge your understanding of Signals and 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 Signals and 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 Signals and 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 Signals and Systems knowledge to the test? Let's get started with our carefully curated MCQs!

Signals and Systems MCQs | Page 35 of 48

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Q341.
Which one of the systems described by the following I/P - O/P relations is time invariant

a.

y(n) = n x(n)

b.

y(n) = x(n) - x(n - 1)

c.

y(n) = x(- n)

d.

y(n) = x(n) cos 2ฯ€fโ‚€n

Discuss
Answer: (b).y(n) = x(n) - x(n - 1)
Q342.
Fourier transform is defined for

a.

periodic

b.

non-periodic

c.

finite duration

d.

all

Discuss
Answer: (b).non-periodic
Q343.
F.T. of continuous non-periodic signal is

a.

aperiodic

b.

periodic

c.

a and b

d.

none

Discuss
Answer: (a).aperiodic
Q344.
Inverse Fourier transform of '1' is

a.

U(t)

b.

ฮด(t)

c.

'0'

d.

infinite

Discuss
Answer: (b).ฮด(t)
Q345.
Pick out the odd one

a.

stochastic variable

b.

stochastic function

c.

random variable

d.

random experiment

Discuss
Answer: (d).random experiment
Q346.
X and Y are two random variables and Z = X + Y . Letmz, mz, mx, my represent mean of Z, X and Y. Then

a.

mz = mx + my

b.

mz โ‰ค mx + my

c.

mz< mx + my

d.

mz > mx + my

Discuss
Answer: (a).mz = mx + my
Q347.
Energy spectral density is equal to for a signal g(t)

a.

|G(f)|²

b.

|g(t)|²

c.

|G(f)|²/Bandwidth

d.

|g(t)|²/Bandwidth

Discuss
Answer: (a).|G(f)|²
Q348.
State space analysis is applicable to

a.

time invariant systems

b.

time varying systems

c.

both time invariant and time varying systems

d.

none of the above

Discuss
Answer: (c).both time invariant and time varying systems
Q349.
For Ergodic Process

a.

ensemble Average equal to time Average

b.

ensemble Average is not equal to time Average

c.

ensemble Average > Time Average

d.

ensemble Average < Time Average

Discuss
Answer: (a).ensemble Average equal to time Average
Q350.
Assertion (A): A non-sinusoidal wave can be expressed in terms of sine waves of different frequencies which are multiples of the frequency of fundamental.

Reason (R): If negative half of a complex wave is a reproduction of the positive half, the even harmonics are absent.

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 true, R is false

d.

A is false, R is true

Discuss
Answer: (b).Both A and R are correct but R is not correct explanation of A
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