### 1. What does MATLAB stand for?

a) Mathematical Laboratory

**b) Matrix Laboratory**

c) Mathematical Analysis Tool Laboratory

d) Matrix Analysis Tool Laboratory

**Answer: b) Matrix Laboratory**

### 2. Which command is used to clear the MATLAB workspace?

**a) clear**

b) reset

c) clc

d) close

**Answer: a) clear**

### 3. Which MATLAB function is used to display text on the screen?

**a) disp**

b) display

c) print

d) show

**Answer: a) disp**

### 4. What is the extension for MATLAB script files?

a) .mat

b) .script

**c) .m**

d) .txt

**Answer: c) .m**

### 5. How do you comment a single line in MATLAB?

a) //

b) '''

c) #

**d) %**

**Answer: d) %**

### 6. Which function is used to read data from a text file in MATLAB?

a) readtable

**b) importdata**

c) load

d) readfile

**Answer: b) importdata**

### 7. What does the 'plot' function in MATLAB do?

a) Displays a histogram

b) Displays a scatter plot

**c) Displays a line plot**

d) Displays a bar plot

**Answer: c) Displays a line plot**

### 8. Which MATLAB function is used to find the square root of a number?

**a) sqrt**

b) squareroot

c) root

d) power

**Answer: a) sqrt**

### 9. Which command is used to save variables to a file in MATLAB?

a) store

**b) save**

c) savefile

d) export

**Answer: b) save**

### 10. In MATLAB, what does 'ans' represent?

**a) Answer**

b) Analysis

c) Array Name Summary

d) Algorithmic Notation System

**Answer: a) Answer**

### 11. Which function is used to concatenate arrays in MATLAB?

a) concat

b) join

c) merge

**d) cat**

**Answer: d) cat**

### 12. What is the output of 'mod(15, 7)' in MATLAB?

**a) 1**

b) 2

c) 3

d) 4

**Answer: a) 1**

### 13. Which function is used to generate a sequence of numbers in MATLAB?

**a) linspace**

b) range

c) sequence

d) numberseq

**Answer: a) linspace**

### 14. What is the purpose of the 'hold' function in MATLAB?

**a) Holds the current plot**

b) Holds the command window

c) Holds the workspace

d) Holds the variable value

**Answer: a) Holds the current plot**

### 15. Which MATLAB function is used to find the mean of an array?

**a) mean**

b) average

c) avg

d) m

**Answer: a) mean**

### 16. What does the 'eye' function in MATLAB generate?

**a) Identity matrix**

b) Zero matrix

c) Random matrix

d) Ones matrix

**Answer: a) Identity matrix**

### 17. Which MATLAB function is used to generate random numbers between 0 and 1?

**a) rand**

b) random

c) r

d) randint

**Answer: a) rand**

### 18. Which operator is used for matrix multiplication in MATLAB?

**a) ***

b) x

c) mul

d) matrixmul

**Answer: a) ***

### 19. What is the output of 'round(3.7)' in MATLAB?

a) 3

**b) 4**

c) 3.5

d) 4.5

**Answer: b) 4**

### 20. Which function is used to find the maximum value in an array in MATLAB?

**a) max**

b) maximum

c) maxvalue

d) findmax

**Answer: a) max**

### 21. What does the 'subplot' function in MATLAB do?

**a) Creates subplots within a figure**

b) Rotates the plot

c) Changes the plot color

d) Scales the plot

**Answer: a) Creates subplots within a figure**

### 22. Which MATLAB function is used to perform element-wise logical OR?

**a) |**

b) ||

c) or

d) logicalor

**Answer: a) |**

### 23. What does the 'ones' function in MATLAB generate?

**a) Matrix of ones**

b) Matrix of zeros

c) Matrix of random numbers

d) Identity matrix

**Answer: a) Matrix of ones**

### 24. Which function is used to compute the inverse of a matrix in MATLAB?

**a) inv**

b) inverse

c) invmatrix

d) computeinverse

**Answer: a) inv**

### 25. In MATLAB, what does 'pi' represent?

a) 3.142

b) 22/7

c) 3.1416

**d) Mathematical constant π**

**Answer: d) Mathematical constant π**

### 26. Which function is used to concatenate strings in MATLAB?

**a) strcat**

b) concatenate

c) concatstr

d) joinstr

**Answer: a) strcat**

### 27. What is the output of 'ceil(4.3)' in MATLAB?

a) 4

**b) 5**

c) 4.5

d) 5.5

**Answer: b) 5**

### 28. Which MATLAB function is used to create a cell array?

**a) cell**

b) createcell

c) cellarray

d) makecell

**Answer: a) cell**

### 29. What does the 'fliplr' function in MATLAB do?

**a) Flips the matrix left to right**

b) Flips the matrix up to down

c) Flips the plot horizontally

d) Flips the plot vertically

**Answer: a) Flips the matrix left to right**

### 30. Which MATLAB function is used to calculate the dot product of two vectors?

**a) dot**

b) dotproduct

c) vectorproduct

d) product

**Answer: a) dot**

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