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Welcome to the Digital Signal Processing MCQs Page

Dive deep into the fascinating world of Digital Signal Processing with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Digital Signal Processing, a crucial aspect of MATLAB. In this section, you will encounter a diverse range of MCQs that cover various aspects of Digital Signal Processing, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within MATLAB.

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Check out the MCQs below to embark on an enriching journey through Digital Signal Processing. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of MATLAB.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Digital Signal Processing. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Digital Signal Processing MCQs | Page 3 of 8

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Q21.
What is the output of the following code? 
t=[0:1:2];
plot(t,p);
hold;
plot(-t,p);

a.

A mirror image of ramp function from 0 to 2 units in time

b.

A ramp function from 0 to 2 units in time and it’s a mirror image in the same window

c.

A ramp function from 0 to 2 units in time

d.

Error

Discuss
Answer: (b).A ramp function from 0 to 2 units in time and it’s a mirror image in the same window
Q22.
Discrete time convolution is not possible in MATLAB.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q23.
plot([0:1:8],[rectpulse(1,9)]’) and plot([0:1:8],ones(1,9)) will generate the same graph.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q24.
If x(t-5)=0 for t<5 = A for t>=5, the signal is ___________

a.

Causal

b.

Symmetric

c.

Linear, Time Invariant and Causal

d.

Cannot be determined

Discuss
Answer: (a).Causal
Q25.
What is the output of the following code? 
>>p=[zeros(1,5),ones(1,6)];
>> t=0:1:10;
>> plot(t,p);

a.

r(t-5)-r(t-6)-u(t-10)

b.

r(t-5)-u(t-6)-u(t-10)

c.

r(t-5)-u(t-6)-r(t-10)

d.

r(t-5)-r(t-6)-r(t-10)

Discuss
Answer: (a).r(t-5)-r(t-6)-u(t-10)
Q26.
What is the output of the following code? 
[l,m]=deconv([4 6 8],[2 3 4])

a.

l=2,m=0

b.

m=2,l=0

c.

l=m=2

d.

Error

Discuss
Answer: (a).l=2,m=0
Q27.
What is the output of the following code? 
stem([0:1:19],[zeros(1,5) [rectpulse(1,5)] zeros(1,5) 2*[rectpulse(1,5)]])

a.

Error in the input of the y axis

b.

A function whose step size increases to 1 at t=5 and to 2 at t=15

c.

A function whose step size increases to 1 at t=4 and to 2 at t=14

d.

Syntactical Error

Discuss
Answer: (a).Error in the input of the y axis
Q28.
What is the output of the following code? 
a=[zeros(1,4) [rectpulse(1,5)]’ zeros(1,6) 2*[rectpulse(1,9)]’];
stem([0:1:22],a];

a.

Error in the input of the y axis

b.

A function whose step size increases to 1 at t=5 and to 2 at t=15

c.

A function whose step size increases to 1 at t=4 and to 2 at t=14

d.

Error in the input of the x axis

Discuss
Answer: (d).Error in the input of the x axis
Q29.
The unit step response of an L.T.I. system is the convolution of a step signal and it’s ________

a.

Impulse response

b.

Ramp response

c.

Parabolic response

d.

Time response

Discuss
Answer: (a).Impulse response
Q30.
What is the output of the following code? 
conv([1 2],[3 4])

a.

[3 10 8]

b.

[8 10 3]

c.

[3 8]

d.

[4 6]

Discuss
Answer: (a).[3 10 8]
Page 3 of 8

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