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Scilab test – Spoken Tutorial Quiz Answers
Q1. If E = [5 19 15;8 22 36], What is the output of E(1,2)
- a. 15
- b. 36
- c. 22
- d. 19
Ans:- d. 19
Q2. The default variable to store the answer is?
Select one:
- a. None of the above
- b. y
- c. ans
- d. result
- e. x
Ans:- c. ans
Q3. If, in an 1d-ODE ydot = cos(t) independent variable’s range is defined as t = -%pi:%pi and initial condition is given as y(0) = 0, on solving and on plotting ‘y’ versus ‘t’ the output will of the form,
- a. y=sin(t)
- b. None of the above
- c. y=cos(t)
- d. Error while integrating
Ans:- d. Error while integrating
Q4. What is the output of below program?
for i = 1:5
disp(i)
if (i==2),
break
end
end- a. 1 2 3 4 5
- b. 1 2 3
- c. 1
- d. 1 2
Ans:- d. 1 2
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Q5. Which of the following is true about functions in Scilab?
- a. They are all user defined
- b. None of the above
- c. User defined functions are a subset of all functions
- d. Functions do not have arguments
Ans:-
Q6. If P = [1 2 3;4 5 6], What is the output of length(p)
- 3
- 2
- 6
- 4
Ans:-
Introduction to Computers – Spoken Tutorial Quiz Answers
Q7. What is the output of the following line of code?
counter = 0;
r=3;
for i=1:2;
if(r>=0 & counter==0)
disp(“1”);
counter=counter+1;
else if(r<0 & counter==0)
disp(“0”);
counter=counter+1;
else
disp(-1);
counter=counter+1;
end
end
end
- 0 0
- 1 -1
- Incorrect control instruction syntax
- -1 1e. 1 1
Ans:-
Q8. In the scifunc block in xcos, what is the syntax to configure for two input/output?
- a. [1,1;2,2]
- b. [1,2]
- c. [1,1;1,1]
- d. [1,1;2,1]
- e. [1,1]
Ans:- c. [1,1;1,1]
Q9. In plot2d(x,y,style=3), the style argument is used to
- a. customize the appearance of the plot
- b. Close the present window
- c. Open a new window for plot
- d. customize the appearance of the font
Ans:- a. customize the appearance of the plot
Q10. What is the output of the following line of code?
1D-1
- a. 0.01
- b. 0
- c. 0.1
- d. Undefined variable D
- e. Missing operator, comma, or semicolon
Ans:-
Scilab test – Spoken Tutorial Quiz Answers – All the Answers Provided on this page are Correct if you think there is any mistake, Please comment, we will update it soon.
Q11. What is the significance of Final Integration Time in xcos?
- a. None of the above
- b. There is no such thing as Final Integration Time in xcos
- c. It defines how long the simulation will run
- d. It defines the integration upper limit
- e. It defines after how much time the simulation will start
Ans:- c. It defines how long the simulation will run
Q12. How do you create an identity matrix of 3 by 3
Select one:
- a. ones(3,3)
- b. zeros(3,3)
- c. iden(3,3)
- d. eye(3,3)
Ans:- d. eye(3,3)
Q13. Which statements below are true with respect to Scilab?
a. Runs only on Linux
b. Is used for numerical computation
- a. Only a
- b. None of the above
- c. Only b
- d. Both a and b
Ans:- c. Only b
Q14. If P =[ 1 2 3;4 5 6], P(1,:) extracts
- a. First row ie 1 2 3
- b. Second row ie 4 5 6
- c. First column ie 1 4
- d. Second column Ie 2 5
Ans:- a. First row ie 1 2 3
Q15. What is the value of y1 and y2 in the following code?
r = linspace(1,5,9);
length(r);
[m,p]=max(r);
r = gsort(r);
y1=r(p-5);
y2=r($-5);
- a. y1 = 3.5; y2 = 3.5
- b. Syntax error
- c. y1 = 3.5; y2 = 1
- d. Undefined variable $
- e. y1 = 1; y2 = 3.5
Ans:- a. y1 = 3.5; y2 = 3.5
Q16. Execution of the command modulo(2,3) will return?
- a. 1
- b. 0
- c. 2
- d. NAN
- e. 0.67
Ans:- (C) 2
Q17. Provide the character used to suppress the output of a command?
Answer: Semicolon
Q18. The output of the command p = poly([1],’p’), will be
- a. Input Argument missing
- b. None of the above
- c. -1+p
- d. p=1
Ans:- c. -1+p
Q19. A block in Xcos with a red input port denotes?
- a. It is not configured yet
- b. It belongs to the electrical blocks category and requires a power source to be connected
- c. It is an event driven block
- d. It is not compatible with any block
- e. The block was not generated properly
Ans:- c. It is an event driven block
Q20. If A=[1 2 – 1; – 2 – 6 4; – 1 – 3 3], What does the command inv(A) and spec(A) do respectively?
- a. Finds inverse and eigen value
- b. Finds Transpose and determinant
- c. Finds inverse and determinant
- d. Finds length and eigen value
Ans:- a. Finds inverse and eigen value
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Q21. i = 1:2:6 , will create a vector of values
- a. 1 2 3
- b. 2 4 6
- c. 1 3 5
- d. 4 5 6
Ans:- c. 1 3 5
Introduction to Computers – Spoken Tutorial Quiz Answers
Q22. How do you find the square root of 49 on Scilab console?
Select one:
- a. sqroot(49)
- b. sqrrt(49)
- c. sqrt(49)
- d. squareroot(49)
Ans:- c. sqrt(49)
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Q23. For a given Matrix, P=[ 2 -4;-6 7] Find the trace of the Matrix P
Answer:- 9
Q24. If p = poly([1],s) and q = poly([-1],s) and r = p+q, will give
Select one:
- a. 2
- b. s^2
- c. 1
- d. 2*s
Ans:-
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Q25. The new graphic window 1 for plotting can be opened by
Select one:
- (A) xset(‘window’,2)
- (B) xset(‘window’,1)
- (C) xset(‘window’,0,1)
- (D) xset(‘window’)
Ans:- (B) xset(‘window’,1)
Q26. Find the Determinant of the matrix [5 -2 3;4 -1 -5;6 7 9]
Answer: 364
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Q27. In x=linspace(1,10,5)
Select one:
- a. x is a row vector with 10 points
- b. x is a row vector with 5 points with linearly equally spaced between 1 and 10
- c. x is a row vector with 15 points
- d. x is a column vector with 5 points with linearly equally spaced between 1 and 10
Ans:- (B) x is a row vector with 5 points with linearly equally spaced between 1 and 10
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Q28. If p = [1 2 3] , What is the output of length(p)
Select one:
- a. 0
- b. 4
- c. 3
- d. 2
Ans:- (C) 3
Q29. Which of the following is true about scripts(answer which suits best)
Select one:
- a. They do not have arguments
- b. They call functions
- c. They have arguments
- d. None of the above
Ans:-
eSim – Spoken Tutorial Quiz Answers
Q30. Identify the command used to save all commands used in a session to a .dat file.
Select one:
- a. load(‘dataab.dat’)
- b. None of the above
- c. save(‘dataab.dat’)
- d. gar(‘dataab.dat’)
Ans:-
Scilab test – Spoken Tutorial Quiz Answers – All the Answers Provided on this page are Correct if you think there is any mistake, Please comment, we will update it soon.
Q31. How do you create a matrix consisting of pseudo random number of 3 by 3
Select one:
- a. prand(3,3)
- b. random(3,3)
- c. Pseudo(3,3)
- d. rand(3,3)
Ans:- d. rand(3,3)
Q32. What command is used to exit from the middle of the loop in scilab?
Ans:- break
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Q33. What character is used to define a predefined numerical constant in scilab?
Ans:- %
Q34. Which command is used to list the available variables and functions in the current scilab workspace?
Select one:
- a. who
- b. var
- c. list
- d. which
- e. None of the above
Ans:-
eSim – Spoken Tutorial Quiz Answers
Q35. What command is used to skip the later part and continue with the loop?
Ans:- Continue
Q36. How do you calculate the determinant of square matrix ‘A’
- a. Det(A)
- b. Spec(A)
- c. det(A)
- d. A’
Ans:- c. det(A)
Q37. Command to find eigen values of a matrix A is?
Select one:
- a. roots(A)
- b. eigen(A)
- c. eye(A)
- d. None of the above
- e. spec(A)
Ans:- e. spec(A)
Q38. In plot2d(x,y,style=3), the style argument is used to
Select one:
- a. customize the appearance of the plot
- b. customize the appearance of the font
- c. Close the present window
- d. Open a new window for plot
Ans:- a. customize the appearance of the plot
Q39. dentify the command used to generate all ones in a 4X4 matrix?
Select one:
- a. One(4,4)
- b. show(4,4)
- c. ones(4,4)
- d. zeros(4,4)
Ans:- c. ones(4,4)
Q40. The Rank of the matrix A=[4 7 2;9 6 3;1 7 3] is
Ans:- 3
Scilab test – Spoken Tutorial Quiz Answers – All the Answers Provided on this page are Correct if you think there is any mistake, Please comment, we will update it soon.
Q41. Identify the commands used to print a graph over existing graph in scilab?
Select one:
- a. x = 0 : 0.1 : 30; y = sin(x); plot(x, y);
- b. x = 0 : 0.1 : 30; y = co(x); plots(x, y);
- c. x = 0 : 0.1 : 30; y = tan(x); print(x, y);
- d. None of the above
Ans:- a. x = 0 : 0.1 : 30; y = sin(x); plot(x, y);
Q42. What does the command getd() do?
Select one:
- a. Opens all scilab files in the current directory
- b. Looks for all .sci file in the current directory and loads its content in workspace
- c. Outputs the full path of the current directory
- d. There is no such command as getd()
- e. Makes the current directory as the working directory
Ans:- b. Looks for all .sci file in the current directory and loads its content in workspace
Q43. if a=1, b=2, c=3, How do you find out the value of variable on Scilab console?
Select one:
- a. by typing a b c
- b. By typing a,b,c
- c. by typing a. b. c.
Ans:- b. By typing a,b,c
Q44. Which Palette contains Clock_C block?
Select one:
- (A) Signal routing
- (B) Event Handling
- (C) Continous time systems
- (D) Discreate time systems
Ans:- (B) Event Handling
Q45. If P =[ 1 2 3;4 5 6], What is the output of [r,c]=size(P)
Select one:
- (A) c=2, r=2
- (B) c=3, r=2
- (C) c=2, r=6
- (D) c=2, r=6
Ans:- (B) c=3, r=2
Q46. If A=[12-1;-2-64,-1-33], What does the command inv(A) and spec(A) do respectively?
Select one:
- a. Finds inverse and determinant
- b. Finds length and eigen value
- c. Finds Transpose and determinant
- d. Finds inverse and eigen value
Ans:- d. Finds inverse and eigen value
Q47. The command used for evaluating a polynomial at a specified point is:
Ans:- polyval
Q48. Identify the command used to generate all ones in a 4X4 matrix?
Select one:
- (A) zeros(4,4)
- (B) show(4,4)
- (C) One(4,4)
- (D) ones(4,4)
Ans:- (D) ones(4,4)
Q49. If vector v=1:5 ,then the last entry of vector v is be denoted by
Select one:
- (A) v(%)
- (B) v(1:$)
- (C) v($)
- (D) v($:1)
Ans:- (C) v($)
Q50. In ‘Scilab’, the words ‘SCI’ and ‘LAB’ stand for
Select one:
- (A) Science and laboratory
- (B) Scientific and lab
- (C) Scientific and laboratory
- (D) Science and lab
Ans:- (C) Scientific and laboratory
Q51. Will the function return the input vector?
function y = same(x)
y = x(0:$)
endfunction
Select one:
- (A) No
- (B) Yes
Ans:- (A) No
Q52. What is the use of plot2d3() command?
Select one:
- (A) To generate a continuous time 3D plot
- (B) To plot vertical bars of a given vector
- (C) To plot in 3D of a discrete signal
- (D) None of the above
- (E) To generate three 2D plots
Ans:- (B) To plot vertical bars of a given vector
Q53. If matrix A=[4 7 2;9 6 3;1 7 3] then A(:,[2 3]) is the submatrix containing
Select one:
- (A) 2nd and 3rd column
- (B) 1st, 2nd and 3rd columns
- (C) 1st and 2nd columns
- (D) 3rd column
Ans:- (A) 2nd and 3rd column
Q54. Which command is used to define a transfer function?
Select one:
- (A) tf()
- (B) syslin()
- (C) poly()
- (D) function()
- (E) linear()
Ans:- (B) syslin()
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Q32. What command is used to exit from the middle of the loop in scilab?
Its answer should be break.
Thank you for your answer.