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Mathematics ECAT Pre Engineering Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
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12
6
8
none of these
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Question # 2
Which of the vectors have opposite direction?
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Question # 3
The angle between the vectors 3i + j - k and 2i - j + k is
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Question # 4
Which of the following is a vector.
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work
time
density
electric field
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Question # 5
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none of these
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Question # 6
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 7
The unit vector along x-axis is
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none of these
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Question # 8
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none of these
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Question # 9
If |a x b|2 + (a,b)2 = _____
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|a|2 + |b|2
|a|2- |b|2
|a|2|b|2
None
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Question # 10
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0
1
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Question # 11
The number z so that the triangle with vertices A(1,-1,0),B(-2,2,1)and C(0,2,z) is a right triangle with right angle at vertex C
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1,2
-1,-2
2,-1
-2,1
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Question # 12
If a +b +c =0 then which of the following is true
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a =b =c =0
a,b =b,c =c,a
a xb=b xc =c xa
None
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Question # 13
Which of the following is a vector.
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distance
temperature
energy
acceleration
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Question # 14
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Question # 15
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Question # 16
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none of these
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Question # 17
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 18
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Question # 19
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Question # 20
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 # 21
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Free vector
Null vector
Unit vector
None of these
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Question # 22
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Question # 23
If 2 and 2 are x and y components of vector then its angle with x-axis is
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30
°
45
°
60
°
90
°
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Question # 24
Which of the following is a scalar.
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electric field
magnetic field
weight
mass
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Question # 25
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A,. B, C are coincident
A, B, C are collinear
Both A and B
None of these
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Question # 26
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25
16
5
0
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Question # 27
3j . k x i
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0
1
3
9
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Question # 28
The position vector of the point P(a, b, c) is
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Question # 29
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 30
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Question # 31
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none of these
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