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Mathematics ECAT Pre Engineering Chapter 5 Matrices and Determinants Online Test MCQs With Answers
Question # 1
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Question # 2
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Hermitian matrix
Skew-hermitian matrix
Symmetric matrix
Identity matrix
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Question # 3
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Null matrix
Triangular matrix
Unit matrix
Rectangular matrix
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Question # 4
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2s
2
2s
3
s
3
3s
3
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Question # 5
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2 x 2
2 x 3
3 x 2
3 x 3
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Question # 6
If A is singular then |A| = ______
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1
0
2
None of these
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Question # 7
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A
2
- 5A + 7I = 1
2A
2
- 3A + 7I = 0
A
2
- 5A + I = 0
A
2
- 5A + 7I = 0
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Question # 8
If the matrices A and B are conformable for multiplication then (AB)
t
= ______
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AB
A
t
B
t
B
t
A
t
A
t
B
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Question # 9
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 # 10
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Question # 11
(ABC)' =
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CBA'
CBA
C' B' A'
None of these
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Question # 12
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1
0
3
-1
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Question # 13
If the trace of matrix A is 5, then the trace of the matrix 3A is
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3/5
5/3
8
15
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Question # 14
If A is a skew-symmetric matrix of order n and P, any square matrix of order n.prove that P' AP is
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Skew-symmetric
Symmetric
Null
Diagonal
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Question # 15
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A
-
A
t
-A
A
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Question # 16
Let A is a 3 x 3 matrix and B is its adjoint matrix. If |B| = 64, then |A| =
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Question # 17
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Question # 18
If there are m rows and n columns in a matrix then its order is
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m x n
m x m
n x n
n x m
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Question # 19
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(2x+a+b+c)
(a+b+c)
(a+b+c+x)
0
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Question # 20
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Question # 21
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