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Mathematics ECAT Pre Engineering Online Test MCQs With Answers
Question # 1
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Orthogonal
Involutary
Idempotent
Nilpotent
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Question # 2
A matrix in which the number of rows is equal to the number of columns is called a
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Diagonal matrix
Rectangular matrix
Square matrix
Scalar matrix
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Question # 3
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Question # 4
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4
3
2
1
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Question # 5
If S = {3,6,9,12.......}, then
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S = Four multiples of 3
S = Set of even numbers
S = Set of prime numbers
S = All multiples of 3
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Question # 6
If f(x) = tan x then f(0) is
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0
1
1/2
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Question # 7
If f(x) = x
2
then f(0) is
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0
1
2
none of these
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Question # 8
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Question # 9
If f(α) = b2 and g (c) =d where c=b2 then (gof)(a) is
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α
c
b
d
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Question # 10
The maximum value of 12 sin
θ
-9 sin
2
θ
is x
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3
4
5
None of these
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Question # 11
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Question # 12
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-1
0
1
None of these
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Question # 13
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parallel vectors
perpendicular vectors
concurrent vectors
collinear vectors
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Question # 14
The 10th common term between the series 3+7+11+....... and 1 + 6 +11 + ....... is
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191
193
211
None of these
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Question # 15
The system of measurement in which the angle is measured in degrees, minutes and seconds is called the
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circular system
CGS system
sexagesimal system
none of these
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Question # 16
The direction cosines of y-axis are
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1, 0, 0
0, 1, 0
0, 0, 1
1, 1, 1
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Question # 17
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Right angled
Obtuse angled
Isosceles
Equilateral
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Question # 18
If the intersection of two sets is non-empty, but either is a subset of other are called
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Disjoint sets
Over lapping
Equal sets
None of these
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Question # 19
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Question # 20
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cos 2x + c
- cos 2x + c
tan 2x + c
cot 2x + c
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Question # 21
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a-b=ab
ab=a
a+b=ab
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Question # 22
xy= 2 is:
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a constant function
an identity function
an improper function
implicit function
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Question # 23
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Question # 24
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A onto B
both a & c
A into B
none of these
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Question # 25
(x
3
-1/2x)
6
is
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15/16 x
2
2/13 x
2
17/7 x
2
16/15 x
2
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Question # 26
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- cos x
sin x
- sin x
sec x
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Question # 27
sin 3a = ______;
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3sin a - 4sin3a
4sin a -3 sin3 a
3 cos3 a -cosa
4cos3 a - 3cos a
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Question # 28
The equation of the tangent at vertex to the parabola is y2 = -8(x -3)
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y=0
x=3
x=1
x=5
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Question # 29
If A is an event then which of the following is true
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P(A)<0
0≥P(A)≤1
P(A)>0
None
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Question # 30
Empty set is
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Not the member of real numbers
Infinite set
Finite set
Not subset of every set
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Question # 31
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An upper triangular matrix
A lower triangular matrix
A diagonal matrix
A null matrix
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