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Hassan
1. The Greek letter used for summation is
A. sigma(&sigma);
B. μ
C. π
D. sigma(&sigma);
2. A man is pulling a trolley on a horizontal road with a force of 100 N making 45 ° with the road. The horizontal and vertical components will be
A. 52.5 N, 85.09 N
B. 55.6 N, 78.6 N
C. 60.3 N, 54.11 N
D. 52.5 N, 85.09 N
3.If the force ‘F’ is multiplied by arm ‘L’, we get
A. momentum
B. distance
C. torque/moment
D. momentum
4.Forces that are parallel to each other with the same direction are
A. parallel forces
B. like parallel forces
C. unlike parallel forces
D. parallel forces
5.The steering of a car has a radius of 15 cm. The torque produced by a couple of 40 N will be
A. 12 Nm
B. 10.8 Nm
C. 15 Nm
D. 12 Nm
6.If the distance between all pairs of particles of the body do not change by applying a force then the body is said to be
A. flexible
B. small
C. large
D. flexible
7. If A and B matrices are of same order and A + B = B + A, this law is known as
A. distributive law
B. commutative law
C. associative law
D. distributive law
8. A pair of equations to determine the value of 2 variables is called
A. simultaneous linear equations
B. paired equations
C. quadratic equations
D. simultaneous linear equations
9.If a matrix has equal number of columns and rows then it is said to be a
A. row matrix
B. identical matrix
C. square matrix
D. row matrix
10.If determinant of a matrix is equal to zero, then it is said to be
A. square matrix
B. singular matrix
C. non-singular matrix
D. square matrix
11. We can add two matrices having real numbers A and B if their
A. order is same
B. rows are same
C. columns are same
D. order is same
12.If the number of columns and rows are not equal in a matrix, then it is said to be a
A. rectangular matrix
B. square matrix
C. diagonal matrix
D. rectangular matrix
13. The methods to solve a pair of simultaneous linear equations are
A. 3
B. 2
C. 4
D. 3
14.If the sum of two matrices A and B is zero matrix, then A and B are said to be
A. multiplicative inverse of each other
B. additive inverse of each other
C. transpose of each other
D. multiplicative inverse of each other
15. Skew symmetric matrix is also called
A. symmetric
B. identical matrix
C. square matrix
D. symmetric
16.The law which does not hold in multiplication of matrices is known as
A. distributive law
B. Inverse law
C. associative law
D. distributive law
17.In matrices (AB)t equals to
A. B
B. A
C. At Bt
D. B
18. If determinant of a matrix is not equal to zero, then it is said to be
A. non-singular matrix
B. square matrix
C. singular matrix
D. non-singular matrix
19. A diagonal matrix having equal elements is called a
A. square matrix
B. identical matrix
C. scalar matrix
D. square matrix
20. In matrices (A + B)tequals to
A. At
B. Bt
C. At + Bt
D. At
21. If A, B and C matrices are of same order and (A + B) + C = A + (B + C), this law is known as
A. cramer's law
B. distributive law
C. commutative law
D. cramer's law
22.Generally the matrices are denoted by
A. capital letters
B. numbers
C. small letters
D. capital letters
23.A matrix with only 1 column is called
A. column matrix
B. row matrix
C. identical matrix
D. column matrix
24.We can subtract two matrices A and B if their
A. elements are same
B. order is same
C. rows are same
D. elements are same
25. In matrices, the rows are denoted by
A. A
B. B
C. R
D. A
26. Vertically arranged elements in a matrix are called
A. columns
B. rows
C. determinants
D. columns
27. By changing the signs of all the elements of a matrix, we obtained
A. identical matrix
B. negative of a matrix
C. null/zero matrix
D. identical matrix
28. A scalar matrix having each element equal to 1 is said to be
A. unit or identical matrix
B. rectangular matrix
C. square matrix
D. unit or identical matrix
29.The order of matrix [2 3] is
A. 2 - by - 1
B. 2 - by - 2
C. 1 - by - 2
D. 2 - by - 1
30.If ‘a’ is a real number, then a−1; is said to be
A. inverse of a
B. identity of a
C. transpose of a
D. inverse of a
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