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Physics ECAT Pre Engineering Chapter 2 Vectors and Equilibrium Online Test MCQs With Answers
Question # 1
The change of order of vectors in a dot product of two vectors:
Choose an answer
Changes its value
Doesn't change it's value
Changes the direction product quantity
None of these
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Question # 2
All trigonometric functions (sine, cosine, tangent etc) are positive in:
Choose an answer
1st quadrant
2nd quadrant
3rd quadrant
4th quadrant
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Question # 3
Two forces of 10 N and 8 N are applied simultaneously to a body. the maximum value of their resultant is:
Choose an answer
2 N
- 2 N
18 N
36 N
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Question # 4
The direction of vector in space is specified by:
Choose an answer
One angle
Two angles
Three angles
None of these
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Question # 5
Two vectors to be combined have magnitudes of 60 N and 35 N. Pick the possible answer:
Choose an answer
100 N
70 N
20 N
Zero
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Question # 6
The vector is space has:
Choose an answer
One Component
Two Compnents
Three Components
Non of these
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Question # 7
Torque is also called:
Choose an answer
Momentum
Linear inertia
Moment of a force
Mass
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Question # 8
If two forces of magnitudes 3.5 and 2.5 N act on a body such that the angle between the forces is zero, then magnitude of the resultant will be:
Choose an answer
1.0 N
6 N
3.5 N
12 N
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Question # 9
A vector of magnitude 5 N is added to a vector of magnitude 8 N while the orientations are changeable. Range of their possible sum will be very from:
Choose an answer
Zero to 3 N
1 N to 13 N
13 N to 3 N
None of these
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Question # 10
If a vector lies in second quadrant, than B
x
and B
y
are:
Choose an answer
-,+
+,-
+,+
-,-
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Question # 11
The resultant of two velocities 3 m/sec and 400 cm/sec making an angle 90
° with each other is:
Choose an answer
20 m/sec
5 m/sec
3 m.sec
None of these
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Question # 12
When the magnitude of two component vectors are equal to that of their resultant, then the angle between the components is:
Choose an answer
60
°
90
°
120
°
150
°
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Question # 13
The sum of two or more vectors is equal to a single vector which is called:
Choose an answer
Component vector
Resultant vector
Product vector
None of these
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Question # 14
All trigonometric functions (since, cosine tangent etc. ) are positive in:
Choose an answer
1st Quadrant
2nd Quadrant
3rd Quadrant
4th Quadrant
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Question # 15
A force of 5 n is acting Y-axis. Its component along X-axis is:
Choose an answer
7 N
5 N
Zero
10 N
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Question # 16
The driection of vector si space is specified by:
Choose an answer
One angle
Two angles
Three angles
None of above
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