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Welcome to the MATLAB Basics MCQs Page

Dive deep into the fascinating world of MATLAB Basics with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of MATLAB Basics, a crucial aspect of MATLAB. In this section, you will encounter a diverse range of MCQs that cover various aspects of MATLAB Basics, 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 MATLAB Basics. 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 MATLAB Basics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

MATLAB Basics MCQs | Page 6 of 17

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Q51.
What is the disadvantage of the whos function in MATLAB?

a.

It does not show the values of the variable

b.

It does not show the size of the variable

c.

It does not show the class of the variable

d.

It does not show the name of the variable

Discuss
Answer: (a).It does not show the values of the variable
Q52.
What will be the output of the following code? 
A=100; if(A>99) clear A; end

a.

A never gets stored in MATLAB

b.

A is first stored and then removed from workspace

c.

Error

d.

A is retained in the workspace

Discuss
Answer: (b).A is first stored and then removed from workspace
Q53.
What is the replacement for the whos function?

a.

Workspace window

b.

Command window

c.

Current folder window

d.

Remembering all the variables used

Discuss
Answer: (a).Workspace window
Q54.
What does the Workspace show?

a.

Attributes of variables, functions from command window

b.

Attributes of variables, script files from command window

c.

Attributes of variables, script files, functions from command window

d.

Attributes of variables from command window

Discuss
Answer: (c).Attributes of variables, script files, functions from command window
Q55.
What is the output of the following code? 
a=10; b=10; c=’pi’; whos

a.

The output will show all double variables

b.

The output will show a and b as double and c as symbolic object

c.

The output will show a and b as symbolic object and c as char

d.

The output will show a and b as double variables and c as char variables

Discuss
Answer: (d).The output will show a and b as double variables and c as char variables
Q56.
What is the size of double and symbolic variables holding integer constants?

a.

8 bytes and 16 bytes

b.

16 bytes and 112 bytes

c.

32 bytes and 26 bytes

d.

23 bytes and 112 bytes

Discuss
Answer: (a).8 bytes and 16 bytes
Q57.
What is the difference between who and whos command?

a.

The former shows the names of the variables being used while the latter shows the details of the variables in the ongoing program

b.

The latter shows the the names of the variables being used while the former shows the details of the variables in the ongoing program

c.

No difference at all

d.

There is no such function as who and whos

Discuss
Answer: (a).The former shows the names of the variables being used while the latter shows the details of the variables in the ongoing program
Q58.
What is the conclusion from the following code? 
 >>whos
 Name     Size         Bytes    Class     Attributes
 ans      1x1            8      double              
 ap       1x1          112   sym              
 c        1x2            4      char
 p        1x1            8      double

a.

The function ‘whos’ doesn’t show the values of the variables being used

b.

The value of each variable is 0

c.

The function ‘who’ is more effective than ‘whos’

d.

Nothing can be concluded

Discuss
Answer: (a).The function ‘whos’ doesn’t show the values of the variables being used
Q59.
How would you express a pi as a character and an integer? Choose the correct code.

a.

a=pi;b=’pi’;

b.

a=22/7; b=pi;

c.

a=3.1415; b=22/7;

d.

a=3.1429;b=’pi’;

Discuss
Answer: (a).a=pi;b=’pi’;
Q60.
What will be the output of the following code? 
A=sim(pi)+cod(pi)

a.

A=-1

b.

Undefined function or variable ‘cod’

c.

Undefined function or variable ‘sim’

d.

Undefined function or variable ‘sim’ and ‘cod’

Discuss
Answer: (c).Undefined function or variable ‘sim’
Page 6 of 17

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