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Mathematics ECAT Pre Engineering Online Test MCQs With Answers
Question # 1
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Question # 2
The sum of infinite numbers of terms of an arithmetic series is
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Finite
Infinite
May or may not finite
None of these
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Question # 3
√(-1b) =?
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b i
-i b
b2
i√b
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Question # 4
Which of the following is a vector.
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distance
temperature
energy
acceleration
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Question # 5
Which of the following is a vector.
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work
time
density
electric field
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Question # 6
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 # 7
f (x) = | x | is a/an
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Injective function
Bijective function
Surjective function
Implicit function
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Question # 8
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1
0
5
2
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Question # 9
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Question # 10
A card is drawn from a pack of cards numbered 1 to 52, the probability that the number on the card is a perfect square is
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1/13
2/13
7/52
None of these
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Question # 11
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Question # 12
The principal value of sin
-1
(-1/2)
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π/3
π/4
π/6
-π/6
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Question # 13
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Question # 14
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Question # 15
The number of solution of the equation tan x + sec x = 2 cos x lying in the interval [0, 2
π
] is
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0
1
2
3
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Question # 16
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none of these
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Question # 17
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Polynomial of degree 0
Polynomial of degree 2
Quadratic equation
None of these
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Question # 18
The sum of first n even number is
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n2
n(n+1)
n+1
n+2
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Question # 19
If z
1
= (a,b), z
2
=(c,d), then z
1
z
2
= -------------------
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(ac,bd)
(ac+bd, ad-bc)
(ac-bd , ad+bc)
(ac-bd , ad-bc)
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Question # 20
A and B be two square matrices and if their inverse exist, the (AB)
-1
=
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A
-1
B
-1
AB
-1
A
-1
B
B
-1
A
-1
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Question # 21
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Question # 22
If five triangles are constructed having sides of the lengths indicated below, the triangle that will NOT be a right triangle is
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8, 15, 17
3, 4, 5
12, 15, 18
5, 12, 13
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Question # 23
2π is the period of
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sin𝜽
tan𝜽
cot𝜽
all circular function
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Question # 24
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Question # 25
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-1
1
2
-2
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Question # 26
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Addition
Subtraction
Multiplication
None of these
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Question # 27
If Sin A = sin B, cos A = cos B, then the value of A in terms of B is
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Question # 28
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none of these
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Question # 29
The set of natural is a semi group w.r.t
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Addition
Division
Subtraction
None of these
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Question # 30
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Question # 31
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1
0
3
-3
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