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Mathematics ECAT Pre Engineering Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
3j . k x i
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0
1
3
9
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Question # 2
u,v,wand u x (v.w) are
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Equal
Parallel
Additive immense of each other
Meaningless
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Question # 3
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Question # 4
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Question # 5
Unit vector in the positive direction of x-axis is
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Question # 6
Which of the following is a vector.
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energy
force
work
power
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Question # 7
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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Question # 8
The ortho center of triangle whose vertices are (0,0)(3,0)(0,4) is
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(0,0)
(1,1)
(2,2)
(3,3)
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Question # 9
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Question # 10
If a,b,c are unit vectors then |a + b|2 +|a - b|2
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4
8ab
9cos
4(a,b)
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Question # 11
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 # 12
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 # 13
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 14
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12
6
8
none of these
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Question # 15
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none of these
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Question # 16
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direction ratios
direction cosines
direction angles
none of these
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Question # 17
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Question # 18
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a
1
+ a
2
a
2
1
+ a
2
2
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Question # 19
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Question # 20
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Question # 21
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Question # 22
The unit vector along z-axis is
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none of these
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Question # 23
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Question # 24
If Projvu = Projuv, then
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Uand vare parallel
|u|=|v|
Uandvre perpendicular
One ofuorv
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Question # 25
Which of the following is a vector
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length
momentum
volume
speed
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Question # 26
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1
0
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Question # 27
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Question # 28
If a,b c are sides of a triangle taken in order then a x b =
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b x c
b x a
cxa
Both a & b
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Question # 29
Which of the following does not represent absolute value of a vector
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magnitude
length
norm
number
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Question # 30
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A
0
Unit vector
None
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