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Online Tests

Mathematics ECAT Pre Engineering Online Test MCQs With Answers

Question # 1

The period of tan [x/3] is ______

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2π

4π

3π

5π

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Question # 2

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none of these

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Question # 3

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1

-1

0

None of these

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Question # 4

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Question # 5

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Question # 6

The distance of the point (a, b) from x-axis is

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a

b

a + b

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Question # 7

The function f : x→ y defined as f (x) =α∀x∈ X,α∈ y is called

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Constant function

Polynomial function

Identity function

Linear function

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Question # 8

Which of the following is not a quadrantal angle

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90°

100°

180°

270°

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Question # 9

The value of x which is unchanged by the mapping in the function defined by f ; x⟶ x² + 5x -5 for x> 0 is

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1

5

-5

-1

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Question # 10

1⁰= ______

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Question # 11

cos 3a =_______;

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3sin a - 4sin3 a

4sin a - 3sin3 a

3cos3 a - 4cos a

4cos3a - 3cos a

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Question # 12

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x³⁹

40x³⁹

40x⁴¹

none of these

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Question # 13

The point (x₁, y₁) lies outside the circle x²+ y²+ 2gx + 2fy + c =0 if

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Question # 14

Sum of n terms of a geometric series if | r | < 1 is

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Question # 15

x = ________ is in the solution of 2x - 5 > 0

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0

2

-2

3

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Question # 16

Choose an answer

2

-3/2

1

0

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Question # 17

The order of the matrix A is 3 x 5 and that of B is 2 x 3.The order of the matrix BA is

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2 x 3

3 x 2

2 x 5

5 x 2

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Question # 18

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Question # 19

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Question # 20

Which one represents a sequence

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an

Sn

a(n)

{an}

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Question # 21

(7,9) +(3,-5) =

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(4,4)

(10,4)

(9,-5)

(7,3)

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Question # 22

Period of cos x is _____

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Question # 23

The radian measure of the central angle of an arc 50 m long on a circle of radius 25 m is

Choose an answer

3

2

1

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Question # 24

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Question # 25

If f(x) = -x³then f(-2) is

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-2

-4

-8

8

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Question # 26

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1, 2, 3

1, 5, 9

2, 5, 8

3, 6, 9

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Question # 27

The first three terms in the expansion of (1 - x)^-2are

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1 - 2x + 3x²

1 - 2x - 3x²

1 + 2x + 3x²

-2 - 2x +3x²

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Question # 28

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c/a

-c/a

b/a

-b/a

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Question # 29

sin(3π/2 -θ)=_______;

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sinθ

cosθ

-sinθ

-cosθ

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Question # 30

If a^x= b^y= c^zand a, b, c are in G.P. then x, y, z are in

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A.P.

G.P.

H.P.

None of these

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Question # 31

cotθ= sin 2θifθ=

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