Matlab Applications R15 May 2019 Question Paper & Answers - B.Tech MECT-MCT-MEM IV-II Sem

Part A

125 marks

a

What are the main windows that are opened when MATLAB software is started?

2 marks

Answer

When MATLAB starts, the main windows opened are the Command Window, Workspace, Current Folder, and Command History.

b

What is the use of editor window in MATLAB software?

3 marks

Answer

The Editor Window is used for creating, editing, and debugging MATLAB script files (.m files) and functions. It allows users to write sequences of commands, save them as programs, and execute them as a whole rather than typing commands line-by-line in the Command Window.

c

What is an Array?

2 marks

Answer

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d

Explain the creation of a 2-dimentional matrix in MATLAB.

3 marks

Answer

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e

What is the use of hold on and hold off commands in MATLAB?

2 marks

Answer

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f

What is a polar plot? How to plot polar plots in MATLAB?

3 marks

Answer

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g

What is the use of polyval function?

2 marks

Answer

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h

What is interpolation? What is its use?

3 marks

Answer

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i

Write the format for plot3() in MATLAB.

2 marks

Answer

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j

How to create 3-D pie plots in MATLAB? Explain with an example.

3 marks

Answer

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Unit I

210 marks

a

What is the use of script files? Explain the creation and execution of script files.

5 marks

Answer

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b

Verify the trigonometric identity by calculating left hand side and right hand side of the equation using MATLAB, substituting x = π/5.

5 marks

Answer

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OR

310 marks

a

List different basic mathematical functions available in MATLAB and explain with examples.

5 marks

Answer

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b

Solve the equation by writing MATLAB commands in the command window.

5 marks

Answer

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Unit II

410 marks

a

What is the use of zeros, ones and eye command in MATLAB? Explain with examples.

6 marks

Answer

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b

How to find the transpose of a matrix in MATLAB? Explain with two examples.

4 marks

Answer

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OR

510 marks

a

What is the condition to append two matrices? Explain how to append matrices by considering two matrices A and B with 3 × 4 and 3 × 3 sizes.

7 marks

Answer

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b

If kt =[2 8 40 65 3 55 23 15 75 80], what is the value of kt after kt(6)=[] command is executed in MATLAB?

3 marks

Answer

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Unit III

610 marks

a

What is the use of plot command in MATLAB? Explain by considering a suitable example.

6 marks

Answer

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b

How to plot horizontal bars in MATLAB? Explain.

4 marks

Answer

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OR

710 marks

a

Compare between script files and function files.

5 marks

Answer

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b

What are inline functions? How to create inline functions in MATLAB?

5 marks

Answer

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Unit IV

810 marks

a

For the polynomial f(x) = x5 – 12.1x4 + 40.59x3 – 17.015x2 – 71.95x + 35.88: (i) Calculate f(9), (ii) Plot the polynomial for –1.5 ≤ x ≤ 6.7.

6 marks

Answer

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b

Explain interp1() function used in MATLAB.

4 marks

Answer

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OR

910 marks

a

Discuss the use of polyfit() function in MATLAB.

5 marks

Answer

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b

Given data points, determine a function w = f(t) using MATLAB code.

5 marks

Answer

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Unit V

10

How to create surface plots in MATLAB? Using MATLAB make a surface plot of the function over the domain –1 ≤ x ≤ 3 and 1 ≤ y ≤ 4.

10 marks

Answer

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OR

1110 marks

a

Discuss the use of view command in MATLAB.

5 marks

Answer

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b

Using the numerical integration, calculate the following integral using MATLAB.

5 marks

Answer

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV MATLAB APPLICATIONS Previous Question Paper (May - 2019 - R15)

Part A

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Unit I

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Unit II

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Unit III

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Unit IV

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Unit V

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