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 32 of 48

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Q311.
If a sequence is causal then ROC is (where a is any number)

a.

|z| > a

b.

|z| < a

c.

|z| = a

d.

Entire Plane

Discuss
Answer: (a).|z| > a
Q312.
If f1(t)<< F1(jฯ‰) and f2(t)โ†” F2(jฯ‰), then [a1 f1(t) + a2f2(t)]โ†”

a.

a1F1(jฯ‰) + a2F2(jฯ‰)

b.

a1a2F1(jฯ‰) + F2(jฯ‰)

c.

a1F1(jฯ‰) - a2F2(jฯ‰)

d.

a1F1*(jฯ‰) + a2F2*(jฯ‰)

Discuss
Answer: (a).a1F1(jฯ‰) + a2F2(jฯ‰)
Q313.
The signal x(t) = A cos (ฯ‰โ‚€t + ฯ†) is

a.

energy signal

b.

power signal

c.

energy Power

d.

none

Discuss
Answer: (b).power signal
Q314.
The inverse Fourier transform of ฮด(t) is

a.

โˆช(t)

b.

1

c.

ฮด(t)

d.

e^(j2ฯ€t)

Discuss
Answer: (b).1
Q315.
Which one of the following is the correct statement of the system characterized by the equation y(t) = ax(t) + b?

a.

linear for any value of b

b.

linear if b > 0

c.

linear if b < 0

d.

non-linear

Discuss
Answer: (d).non-linear
Q316.
The derivative of unit step function is

a.

unit impulse

b.

ramp with slope 1

c.

impulse

d.

either (a) or (b)

Discuss
Answer: (a).unit impulse
Q317.
The coefficients Fn in the exponential form of Fourier series are

a.

independent of frequency

b.

functions of frequency

c.

even function of frequency

d.

odd functions of frequency

Discuss
Answer: (b).functions of frequency
Q318.
If X(z) = (1 - az¯¹), and |a| < |z|, the initial value xโ‚€ is

a.

1

b.

0

c.

2

d.

โˆž

Discuss
Answer: (a).1
Q319.
The function A e^(st) where s = s + jฯ‰ represents

a.

A phasor whose magnitude changes with time

b.

A phasor whose frequency is ฯ‰

c.

A phasor rotating in counterclockwise direction at angular frequency ฯ‰ and whose magnitude increases with t

d.

A phasor rotating in clockwise direction at angular frequency ฯ‰ and whose magnitude increases with t

Discuss
Answer: (c).A phasor rotating in counterclockwise direction at angular frequency ฯ‰ and whose magnitude increases with t
Q320.
Half wave sysmmetry means f(t) = - f(t ± T/2).

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
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