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.Management Sciences
Category: Vectors And Equilibrium
The direction of a vector in space is specified by_______________?
A. One angle
B. Two angle
C. Three angle
D. No angle
Two vectors A and B are making angle θ with each other. The scalar projection of vector B on vector A is written as____________?
A. A.B/A
B. A.B/B
C. A.cosθ
D. Both a and b are correct
A body will be in complete equilibrium when it is satisfying______________?
A. 1st condition of equilibrium
B. 2nd condition of equilibrium
C. Both Ist and 2nd condition of equilibrium
D. Impossible
Which one is a unit vector ?
A. ??3 i^ + ??3 j^ + ??3 k^
B. 1/??3 i^ + 1/??3 j^ +1/ ??3 k^
C. ??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^
D. Both B and C are correct
Which of the following pairs does not have identical dimensions ?
A. Torque and energy
B. Momentum and impulse
C. Energy and work
D. Mass and moment of inertia
An angle between two vectors A and B can be determined by_____________?
A. Their dot product
B. Their cross product
C. Head to tail rule
D. Right-hand rule
Which one is not a correct relation ?
A. AxB = -BxA
B. |AxB| = -|BxA|
C. AxB = AB Sinθn^
D. BxA = AB Sinθ(-n^)
The rectangular coordinate system is also called______________?
A. Polar coordinate system
B. Cartesian coordinate system
C. Cylindrical coordinate system
D. Spherical coordinate system
In which quadrant the two rectangular components of a vector have same sign ?
A. 1st
B. 2nd
C. Both 1st and 3rd
D. 4th
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