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MATLAB Online Test and Answers Pdf Download :-
These are very useful & Most Asked Questions in your certification Exam. Read all Online Mock Test Exam Question Bank for Beginners Freshers & Experienced.
1. What does Matlab stand for?
a) Math Laboratory
b) Matrix Laboratory
c) Mathworks
d) Nothing
e) none of the above
Answer: b
2. What symbol precedes all comments in Matlab?
a) “
b) %
c) //
d) < e) none of the above Answer: e
3. Which of the following is not a pre-defined variable in Matlab.
a) pi
b) inf
c) i
d) gravity
e) j
Answer: d
4. This Matlab command clears all data and variables stored in memory:
a) clc
b) clear
c) delete
d) deallocate
e) none of the above
Answer: b
5. Characters in Matlab are represented in their value in memory.
a) decimal
b) ASCII
c) hex
d) string
e) none of the above
Answer: b
6. Which is these is not an aspect of a for/while loop:
a) update
b) initialization
c) runner
d) condition
e) all are aspects of loops
Answer: c
7. To better manage memory and prevent unnecessary memory allocations, Matlab uses:
a) vectors
b) scalars
c) matrix math
d) delayed copy
e) licenses
Answer: d
8. To print a newline in a fprintf statement, you must use the following escape character:
a) \t
b) \nl
c) \nxt
d) \n
e) none of the above
Answer: d
9. In Matlab, this keyword immediately moves to the next iteration of the loop:
a) update
b) goto
c) continue
d) break
e) none of the above
Answer: c
10. Which of the following will correctly define x, y, and z as symbols?
a) sym (x, y, z)
b) syms x y z
c) syms x, y, z
d) sym x, y, z
e) none of the above
Answer: b
11. Which of these is the way to access the first element in a vector named v (assuming there is at
least one element in the vector)?
a) v(0)
b) v(1)
c) v
d) v(: , 0)
e) none of the above Answer: b
12. Which of the following is used to see if two elements are equal in MATLAB?
a) !=
b) ==
c) isequal
d) =
e) none of the above
Answer: b
13. If vector = [1 2 3 4; 11 24 92 100; 345 65 90 1]. What will the value of a be equal to if this
code is entered into MATLAB >>[a b] = size (vector)?
a) 1 2 3 4
b) 12
c) 1
d) 4
e) 3
Answer: e
14. What is the value of ans that is printed when the following code is run: isnumeric(32)
a) 1
b) 0
c) 32
d) yes
e) true
Answer: a
15. If I want to save a formatted string to memory, but don’t want to print it out, which
command should I use?
a) fprintf
b)sprintf
c) disp
d) echo
Answer: b
MATLAB Objective type Questions with Answers
32. To add a comment to the mfile, the MATLAB command is
A ) %
B ) ;
C ) comment(‘ ‘)
D ) &
Answer: a
33. When used in the fprintf command, the %g is used as the
A ) single character display
B ) fixed point display
C ) string notation display
D ) default number display
Answer: d
34. When used in the fprintf command, the \n is used to
A ) add a space between any two characters
B ) add a line space (enter key)
C ) place a number into the comment
D ) clear the comment
Answer: b
35. To display ‘Question 2’ in the command window, the correct command is
A ) disp(Question 2)
B ) display(‘Question 2’)
C ) disp(‘Question 2’)
D ) Question 2
Answer: c
36. The clc command is used to
A ) clear the command window
B ) erase everything in the mfile
C ) clean the desktop
D ) save the existing mfile
Answer: a
37. The num2str command
A ) converts a number to string
B ) converts string to a number
C ) concatenates numbers and strings
D ) concatenates strings
Answer: a
38. The output of the last line is
aa=2
as=num2str(aa)
cat=[‘cat’ as]
A ) cat2
B ) cat 2
C ) ??? Undefined function or variable ‘as’
D ) cat aa
Answer: a
39. To join one or more strings into a single string is known as
A ) concatenation
B ) joining
C ) string conversion
D ) string theory
Answer: a
40. The output of
cat=[‘cat’ ‘dog’]
is
A ) catdog
B ) cat dog
C ) cat&dog
D ) CatDog
Answer: a