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.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes

a.

division by s in the s domain

b.

division by e^(-sT) in the s domain

c.

multiplication by s in the s domain

d.

multiplication by e^(-sT) in the s domain

Discuss
Answer: (d).multiplication by e^(-sT) in the s domain
Q182.
If transfer function of a system is H(z) = 6 + z¯¹ + z¯², then system is

a.

minimun phase

b.

maximum phase

c.

mixed phase

d.

none

Discuss
Answer: (a).minimun phase
Q183.
Which one is a linear system?

a.

y[n] = x[n] x x[n - 1]

b.

y[n] = x[n] + x[n - 10]

c.

y[n] = x²[n]

d.

(a) and (c)

Discuss
Answer: (b).y[n] = x[n] + x[n - 10]
Q184.
Which one is a causal system?

a.

y(n) = 3x[n] - 2x[n - 1]

b.

y(n) = 3x[n] + 2x[n + 1]

c.

y(n) = 3x[n + 1] + 2x[n - 1]

d.

y(n) = 3x[n + 1] 2x[n - 1] + x[n]

Discuss
Answer: (a).y(n) = 3x[n] - 2x[n - 1]
Q185.
Double integration of a unit step function would lead to

a.

an impulse

b.

a parabola

c.

a ramp

d.

a doublet

Discuss
Answer: (b).a parabola
Q186.
If (27s+97)/(s²+33s) is the Laplace transform of f(t) then f(0โบ) is

a.

0

b.

97/3

c.

27

d.

โˆž

Discuss
Answer: (c).27
Q187.
A voltage V(t) is a Gaussian ergodic random process with a mean of zero and a variance of 4 volt². If it is measured by a dc meter. The reading will be

a.

0

b.

4

c.

2

d.

2

Discuss
Answer: (a).0
Q188.
A first order system will never be able to give a __________ response

1. band stop
2. band pass
3. all pass

Choose the correct option

a.

1, 2, 3 true

b.

1 and 3 true, 2 false

c.

1, 2 are true 3 is false

d.

1, 2 are false, 3 is true

Discuss
Answer: (c).1, 2 are true 3 is false
Q189.
A signal m(t) is multiplied by a sinusoidal waveform of frequency fc such that

v(t)=m(t) cos 2ฯ€fct

If Fourier transform of m(t) is M(f), Fourier transform of v(t) will be

a.

0.5 M(f + fc)

b.

0.5 M(f - fc)

c.

0.5 M(f + fc) + 0.5 M(f - fc)

d.

0.5 M(f - fc) + 0.5 M(f - fc)

Discuss
Answer: (c).0.5 M(f + fc) + 0.5 M(f - fc)
Q190.
A voltage wave having 5% fifth harmonic content is applied to a series RC circuit. The percentage fifth harmonic content in the current wave will be

a.

5%

b.

more than 5%

c.

less than 5%

d.

equal or more than 5%

Discuss
Answer: (b).more than 5%
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