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Mathematics ECAT Pre Engineering Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
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none of these
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Question # 2
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Question # 3
The zero vector is
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[0, 0, 0]
[1, 1, 1]
[0, 1, 0]
[0, 0, 1]
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Question # 4
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Question # 5
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1
0
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Question # 6
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none of these
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Question # 7
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Question # 8
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Question # 9
The position vector of a point (x, y) in xy plane is
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none of these
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Question # 10
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direction ratios
direction cosines
direction angles
none of these
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Question # 11
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 12
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Question # 13
The position vector of the point P(a, b, c) is
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Question # 14
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Question # 15
If Projvu = Projuv, then
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Uand vare parallel
|u|=|v|
Uandvre perpendicular
One ofuorv
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Question # 16
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Question # 17
Which of the following is a vector.
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work
time
density
electric field
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Question # 18
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none of these
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Question # 19
The position vector of any point in space is
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Question # 20
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a
1
+ a
2
a
2
1
+ a
2
2
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Question # 21
If the angle between two vectors with magnitude 2 and 15 is 30
°
then their scalar product is
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15
30
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Question # 22
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Question # 23
If the vector 2i + 4j - 7k and 2i + 6j + xk are perpendicular then x = ?
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0
2
4
7
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Question # 24
Which of the following is not a unit vector
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[1, 1, 1]
[0, 1, 0]
[0, 0, 1]
[1, 0, 0]
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Question # 25
Projection of vector u along v is
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|v| cosθ
|u| cosθ
|v| sinθ
|u| sinθ
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Question # 26
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direction ratios
direction cosines
direction angles
none of these
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Question # 27
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l
2
+ m
2
+ n
2
= 0
l
2
- m
2
+ n
2
= 1
l
2
+ m
2
+ n
2
= 1
l
2
+ m
2
- n
2
= 0
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Question # 28
The unit vector along x-axis is
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none of these
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Question # 29
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perpendicular vectors
concurrent vectors
parallel vectors
none of these
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Question # 30
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none of these
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Question # 31
If uv= Projuv then
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Uandvare parallel
vis a unit vector
Uis a unit vector
Both b and c
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