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Mathematics ECAT Pre Engineering Chapter 5 Matrices and Determinants Online Test MCQs With Answers
Question # 1
The transpose of a row matrix is a ______
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Zero matrix
Diagonal matrix
Column matrix
Row matrix
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Question # 2
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Question # 3
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Question # 4
If A is a non singular matrix then A
-1
= ______
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Question # 5
System of linear equations is inconsistent if
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System has no solution
System has one solution
System has two solution
None of above
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Question # 6
For a square matrix A, if A = A
t
, then A is called
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matrix
Transpose
Symmetric
Non-symmetric
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Question # 7
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Question # 8
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Question # 9
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(2x4)
(2x7)
(2x3)
(7x2)
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Question # 10
Which of the following is an identity matrix?
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none of these
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Question # 11
The square matrix A is skew Hermitian when (A)'=
Choose an answer
A
A'
-A
A
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Question # 12
Matrix multiplication is
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Commutative
Not commutative
Not associative
Not distributive
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Question # 13
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Question # 14
If A is a non-singular matrix then adj A is
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Non-singular
Symmetric
Singular
Non defined
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Question # 15
If order of A is m x n, then order of A
t
is
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m x m
n x n
m x n
n x m
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Question # 16
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a = 4, b = 1
a = 1, b = -4
a = 0, b = 4
a = 2, b = 4
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Question # 17
The order of the matrix [1 2 3] is
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1 x 1
3 x 3
3 x 1
1 x 3
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Question # 18
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At
-A
A
A-1
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Question # 19
Matrices are represented by
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Natural numbers
Real numbers
Small letters
Capital letters
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Question # 20
A square matrix A = [aij] is upper triangular when
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cij = 0
bij = 0
aij = 0 for all i > j
dij = 0
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Question # 21
(ABC)' =
Choose an answer
CBA'
CBA
C'B'A
C'B'A'
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