Thursday 3 September 2015

Most Recently Asked Matlab Multiple Choice Questions And Answers

31.?Executing?in?the?Command?Window?the?following?code
? ??x = [1:3.4; -6:3.5:0.5] ; size(x)?
? returns??
a.? error?message?
b.? 2?? ?2??
c.? 2?? 3?
d.? 3?? 3?
e.? none?of?the?above?  Ans: a

32.     To add a comment to the mfile, the MATLAB command is
A )  %
B )  ;
C )  comment(' ')
D )  &
Ans: 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
Ans: 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
Ans: 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
Ans: 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
Ans: 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
Ans: 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
Ans: 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
Ans: a

40.   The output of
      cat=['cat'   'dog']
is
A )  catdog
B )  cat dog
C )  cat&dog
D )  CatDog
Ans: a

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