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 18 of 48

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Q171.
Inverse Laplace transform of 2s+5 / (s²+5s+6) is

a.

2 exp (- 2.5 t) cosh (0.5 t)

b.

exp (- 2 t) + exp (- 3 t)

c.

2 exp (- 2.5 t) sinh (0.5 t)

d.

2 exp (- 2.5 t) cos 0.5 t

Discuss
Answer: (b).exp (- 2 t) + exp (- 3 t)
Q172.
Two function g1(t) and g2(t) with correlation of 6 has average power of 4 and 5 respectively. The power of g1(t) + g2(t) is

a.

9

b.

21

c.

3

d.

15

Discuss
Answer: (b).21
Q173.
A box has 4 white and 3 red balls. Two balls are taken out in succession. What is the probability that both are white?

a.

4/7

b.

1/2

c.

2/7

d.

1/7

Discuss
Answer: (c).2/7
Q174.
Z transform is a non-linear operation.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q175.
Which one most appropriate dynamic system?

a.

y(n) + y(n - 1) + y(n + 1)

b.

y(n) + y(n - 1)

c.

y(n) = x(n)

d.

y(n) + y(n - 1) + y(n + 3) = 0

Discuss
Answer: (a).y(n) + y(n - 1) + y(n + 1)
Q176.
An energy signal has G(f) = 10. Its energy density spectrum is

a.

10

b.

100

c.

50

d.

20

Discuss
Answer: (b).100
Q177.
In an ac circuit the fundamental component of current wave lags the corresponding voltage wave by 20°. The third harmonic component of current wave lags the corresponding voltage by an angle.

a.

less than 20°

b.

more than 20°

c.

equal to 20°

d.

equal to or more than 20°

Discuss
Answer: (b).more than 20°
Q178.
A signal g(t) = A then g(t) is a

a.

energy signal

b.

power signal

c.

neither energy nor power signal

d.

insufficient data

Discuss
Answer: (b).power signal
Q179.
The Fourier series of an odd periodic function contains

a.

odd harmonics only

b.

even harmonics only

c.

cosine harmonics only

d.

sine harmonics only

Discuss
Answer: (d).sine harmonics only
Q180.
An impulse function consist of

a.

pure dc

b.

pure a.c

c.

entire frequency range with constant phase

d.

infinite bandwidth with linear phase vaariations

Discuss
Answer: (c).entire frequency range with constant phase
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