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 19 of 48

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Q181.
If Sn is the power associated with each frequency component and S(f) is the sum of all these powers, normalised power spectral density is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q182.
For the signal in the given figure the Fourier transform is 2sinω΀₁, then the Fourier transform of the signal in the given figure

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q183.
Let x(t) ↔ X(jΟ‰) be F.T pair. The Fourier transform of the signal x(5t - 3) in terms of X(jΟ‰) is given as

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q184.
Assertion (A): The Fourier series of the wave shown in the figure does not contain even harmaonics.

Reason (R): If f(t) = - f(t ± T/2) the function is said to have half wave symmetry.

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
Q185.
Ξ΄(t) is a

a.

energy signal

b.

power signal

c.

neither energy nor power

d.

none

Discuss
Answer: (b).power signal
Q186.
The analog signal given below is sampled by 600 samples per second for m(t) = 3 sin 500 Ο€t + 2 sin 700 Ο€t, then folding frequency is

a.

500 Hz

b.

700 Hz

c.

300 Hz

d.

1400 Hz

Discuss
Answer: (c).300 Hz
Q187.
If H(f) = y(t)/x(t), then for this to be true x(t) is

a.

exp (j2Ο€ f/t)

b.

exp (-j2Ο€ f/t)

c.

exp (j2Ο€ ft)

d.

exp (-j2Ο€ f/t)

Discuss
Answer: (c).exp (j2Ο€ ft)
Q188.
The analog signal m(t) is given below m(t) = 4 cos 100 Ο€t + 8 sin 200 Ο€t + cos 300 Ο€t, the Nyquist sampling rate will be

a.

1/100

b.

1/200

c.

1/300

d.

1/600

Discuss
Answer: (c).1/300
Q189.
The ROC of sequence in the Z.T. of sequence x[n] = aⁿ βˆͺ [n] is

a.

z > a

b.

z < a

c.

|z| > a

d.

|z| < a

Discuss
Answer: (c).|z| > a
Q190.
In Laplace transform, multiplication by e^(-at) in time domain becomes

a.

translation by a in s domain

b.

translation by (-a) in s domain

c.

multiplication by e^(-as) in s domain

d.

none of the above

Discuss
Answer: (a).translation by a in s domain
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