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 23 of 48

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Q221.
The trignometric Fourier series of an even function of time does not have

a.

dc term

b.

cosine term

c.

sine term

d.

odd harmonic terms

Discuss
Answer: (c).sine term
Q222.
An ac wave with superimposed dc is symmetrical about x - axis.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q223.
Assertion (A): If a wave v = A1 + A2 sin ฯ‰t is applied to a pure capacitor the current wave is:
i = A3 sin(ฯ‰t + 90°)

Reason (R): A capacitor presents infinite impedance to dc.

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: (a).Both A and R are correct and R is correct explanation of A
Q224.
State variables which describe a system are a unique set.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q225.
The z- transform of a systerm is H(z) = z/(z-0.2). If the ROC is |z| < 0.2, then the impluse response of the system is

a.

(0.2)โฟ โˆช[n]

b.

(0.2)โฟ โˆช[- n - 1]

c.

-(0.2)โฟ โˆช[n]

d.

-(0.2)โฟ โˆช[- n - 1]

Discuss
Answer: (d).-(0.2)โฟ โˆช[- n - 1]
Q226.
ROC of sequence x[n] = (3)โฟ โˆช[n] + (4)โฟ โˆช[- n - 1]

a.

|z| > 4

b.

3 < |z| < 4

c.

|z| < 4

d.

|z| > 3

Discuss
Answer: (b).3 < |z| < 4
Q227.
ฮด(t - b) is a pulse function.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q228.
A signal x(n) = sin(ฯ‰โ‚€n + ฯ†) is the input to a linear time invariant system having a frequency response H(e^(jฯ‰)). If the O/P of the system is Ax(n -nโ‚€), then the general form of H(e^(jฯ‰)) will be

a.

- nโ‚€ฯ‰โ‚€ + ฮฒ for any arbitrary real ฮฒ

b.

- nโ‚€ฯ‰โ‚€ + 2ฯ€k for any arbitrary integer k

c.

nโ‚€ฯ‰โ‚€ + 2ฯ€k for any arbitrary integer k

d.

- nโ‚€ฯ‰โ‚€ + ฯ†

Discuss
Answer: (b). - nโ‚€ฯ‰โ‚€ + 2ฯ€k for any arbitrary integer k
Q229.
A casual system having the transfer function H(s) = 1/(s+2) is excited with 10 โˆช(t). The time at which the output reaches 99% of its steady-state value is

a.

2.7 sec

b.

2.5 sec

c.

2.3 sec

d.

2.1 sec

Discuss
Answer: (c).2.3 sec
Q230.
For exponential function e^(-at) the Laplace transform 1/(s - a)

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
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