Question # 1

Which of the following is an identity matrix?

Choose an answer

none of these

The transpose of a row matrix is a ______

Choose an answer

Zero matrix

Diagonal matrix

Column matrix

Row matrix

The square matrix A is skew Hermitian when (A)'=

Choose an answer

A

A'

-A

A

Every identity matrix is

Choose an answer

Row-vector

Scalar

Column-vector

All

Choose an answer

all

Choose an answer

5

15

10

20

The transpose of a zero matrix is a ______

Choose an answer

Column matrix

Zero matrix

Row matrix

Scalar matrix

Choose an answer

a²b²c²

4a²b²c²

4abc

None

Choose an answer

1, 2, 3

1, 5, 9

2, 5, 8

3, 6, 9

The additive inverse of a matrix A is

Choose an answer

None of these

For non-trival solution |A| is

Choose an answer

non zero

A = 0

|A| = 0

At = 0

Choose an answer

A

-A

A^t

A^-

Which of the following is skew symmetric matrix

Choose an answer

The transport of a null matrix is

Choose an answer

Row matrix

Column matrix

Square matrix

Null matrix

Choose an answer

2 x 2

2 x 3

3 x 2

3 x 3

Matrices A = [aij] 2 x 3 and B = [bij] 3 x 2 are suitable for

Choose an answer

BA

A2

AB

B2

Cofactor of an element a_ijis defined by

Choose an answer

(-1)^i+j|A|

(-1)^i+jM_ij

(-1)^i+jM^-1

None of these

For trival solution |A| is

Choose an answer

A

|A| = 0

A = 0

|A|≠ 0

Matrix multiplication is

Choose an answer

Commutative

Not commutative

Not associative

Not distributive

Choose an answer

A(α) - A(β)

A(α) + A(β)

A(α-β)

A(α+β)

Choose an answer

0

1

2

3

Choose an answer

(2x+a+b+c)

(a+b+c)

(a+b+c+x)

0

If A and B are skew-symmetric then (AB)t is

Choose an answer

At Bt

AB

-AB

BA

Choose an answer

The matrix A is Hermitian when (A)' =

Choose an answer

A

-A

A

A'

Choose an answer

a = 4, b = 1

a = 1, b = -4

a = 0, b = 4

a = 2, b = 4

Choose an answer

A^-

A^t

-A

A

Choose an answer

A non-homogeneous linear system AX = B has no solution if

Choose an answer

|A| = 0

|A|≠ 0

Rank (a) = no of variables

Rank > no of variables

A square matrix A = [aij] is upper triangular when

Choose an answer

cij = 0

bij = 0

aij = 0 for all i > j

dij = 0

More Classes

Other Links

ECAT Pre General Science Mathematics Chapter 5 Matrics and Determinants Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer