 # Matlab Multiple Choice Questions

• 16th Jun, 2021

We have listed here the best Matlab Multiple Choice Questions for your basic knowledge of Matlab. This Matlab Test contains 35+ MCQ Questions. You have to select the right answer to every question.

## Matlab Multiple Choice Questions

### 1) The space located for the matrix generated from the spones command is _______.

• A. Same as the original matrix
• B.Same as a sparse matrix
• C.Double that of the sparse matrix
• D.Same as an identity matrix

### 2) A memory for sparse matrix is dedicated by the ______ command.

• A. spalloc
• B.sparsealloc
• C.allocspar
• D.no such command

• A. True
• B.False

• A. inf
• B.pi
• C.gravity
• D.i

### 5) If the coefficient matrix of a linear system has rank 4, and the augmented matrix has rank 5, then:

• A. The system has infinitely many solutions
• B.The system is inconsistent
• C.The system is homogeneous
• D.There are fewer variables than equations

• A. nxt
• B.n
• C.nl
• D.t

• A. hex
• B.ASCII
• C.string
• D.decimal

### 8) What does Matlab stand for?

• A. Matrix laboratory
• B.Math laboratory Mathwork
• C.None of the above
• D.None of the above

### 9) Which of the following will correctly define x,y and z as symbols?

• A. Syms xyz
• B.Syms x,y,z
• C.Sym(x,y,z)
• D.None of these.

### 10) Which of the following isn’t an aspect of a for/while loop?

• A. Initialization
• B.condition
• C.Runner
• D.None of the above

• A. tax-rate
• B.exam1.1
• C.sin
• D.4var

### 12) Which of the following MATLAB calculations would result the value 1?

• A. 6/2*3
• B.1+4/5
• C.3^2/3*3
• D.None of the above

### 13) Which of the following determines the number of elements N of the matrix B?

• A. N = numel(B)
• B.N = prod(size(B))
• C.N = elem(B)
• D.Both a and c

• A. 0
• B.1
• C.Depends on the class of array
• D.Unknown

• A. [3 0 14]
• B.[14 0 3]
• C.[7 0 3]
• D.[2 0 21]

• A. ctrl+b
• B.ctrl+s
• C.ctrl+enter
• D.ctrl+c

• A. int
• B.fint
• C.trapz
• D.nint

• A. 7
• B.6
• D.Not valid

### 19) What symbol precedes all comments in Matlab?

• A. %
• B.//
• C.<
• D.none of the above

### 20) When used in the fprintf command, the %g is used as the

• A. string notation display
• B.default number display
• C.fixed point display
• D.single character display

### 21) The clc command is used to

• A. clean the desktop
• B.erase everything in the mfile
• C.save the existing mfile
• D.clear the command window

### 22) The num2str command

• A. concatenates numbers and strings
• B.converts string to a number
• C.concatenates strings
• D.converts a number to string

• A. cat dog
• B.cat&dog
• C.CatDog
• D.catdog

### 24) Let x and y be solutions to a system of n homogeneous linear equations. If z = ax + by

• A. There are at most 2 leading variable
• B.The solution has n - 2 parameters
• C.z is a solution only if a = 0 and b = 0
• D.z is a solution to the system for all a and b

### 25) Which of the following types of Loops does Matlab Provides?

• A. For Loop
• B.While Loop
• C.Nested Loops
• D.All of the above

### 26) What is the return type of angles function in MATLAB?

• A. Degrees
• D.Depends on the argument

### 27) What is the return type of angles function in MATLAB?

• A. Degrees
• D.Depends on the argument

### 28) What is use of abs function in MATLAB?

• A. Returns power of number
• B.Returns magnitude of a number
• C.Returns the square root of number
• D.None of the above

• A. Pwd
• B.Who
• C.Date
• D.Type

### 30) What does matlab consist of?

• A. Handle Graphics
• B.MATLAB Language
• C.MATLAB working enviroment
• D.All of the Above

### 31) What are the features of MATLAB?

• A. Platform Independent
• B.Full Graphics Capabilities
• C.Ease of Use & Good Source of Help
• D.All of the Above

• A. =
• B.!=
• C.==
• D.isequal

• A. Array
• B.Double
• C.Symbolic
• D.Charecter

### 34) Which of the following matlab command clears all data and variables stored in memory?

• A. Clear
• B.Delete
• C.Deallocate
• D.None of the above

### 35) 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

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