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1.
|
The direction of a
vector in space is represented by
|
||||||||
a)
|
One angle
|
b)
|
Two angle
|
c)
|
Three angles
|
d)
|
None
|
||
2.
|
n^
is along
|
||||||||
a)
|
x-axis
|
b)
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Y axis
|
c)
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Normal to surface
|
d)
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Z -axis
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||
3.
|
Maximum number of
rectangular components are
|
||||||||
a)
|
Two
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b)
|
Three
|
c)
|
Infinite
|
d)
|
None of these
|
||
4.
|
In which quardrant
,the two rectangular components have same sign
|
||||||||
a)
|
1st
|
b)
|
2nd
|
c)
|
1st and 3rd
|
d)
|
4th
|
||
5.
|
The dimension of
torque is equal to
|
||||||||
a)
|
Work
|
b)
|
Energy
|
c)
|
Moment arm
|
d)
|
a and b
|
||
6.
|
i.(J.k)
|
||||||||
a)
|
I
|
b)
|
J
|
c)
|
1
|
d)
|
None of these
|
||
7.
|
Cross product
of zero and null vector is
|
||||||||
a)
|
Zero
|
b)
|
Null vector
|
c)
|
Both possible
|
d)
|
None of these
|
||
8.
|
The magnitude of dot
and cross product is equal .the angle between the vectors
|
||||||||
a)
|
30
|
b)
|
60
|
c)
|
45
|
d)
|
180
|
||
9.
|
east×south has
direction along
|
||||||||
a)
|
West
|
b)
|
North
|
c)
|
Down
|
d)
|
up
|
||
10.
|
Cosθi+sinθj is a
|
||||||||
a)
|
Unit vector
|
b)
|
Position vector
|
c)
|
Null vector
|
d)
|
None of these
|
||
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