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.Management Sciences
Category: Strength of Materials
A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly________________?
A. 38 m
B. 62.5 m
C. 96 m
D. 124 m
E. 240 m
The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is_________________?
A. same
B. double
C. half
D. four times
E. one fourth
The center of percussion of the homogeneous rod of length L suspended at the top will be__________________?
A. L/2
B. L/3
C. 3L/4
D. 2L/3
E. 3L/8
According to principle of transmissibility of forces, the effect of a force upon a body is_______________?
A. maximum when it acts at the center of gravity of a body
B. different at different points in its line of action
C. the same at every point in its line of action
D. minimum when it acts at the C.G. of the body
E. none of the above
If a number of forces act simultaneously on a particle, it is possible_________________?
A. not a replace them by a single force
B. to replace them by a single force
C. to replace them by a single force through C.G.
D. to replace them by a couple
E. to replace them by a couple and a force
Which of the following is not the unit of power ?
A. kW (kilowatt)
B. hp (horse power)
C. kcal/sec
D. kg m/sec
E. kcal/kg sec
If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either__________________?
A. meet in a point
B. be all parallel
C. at least two of them must meet
D. all the above are correct
E. none of the above
The units of moment of inertia of mass are_____________________?
A. kg m2
B. m4
C. kg/m2
D. kg/m
E. m2/kg
Two coplanar couples having equal and op-posite moments_________________?
A. balance each other
B. produce a couple and an unbalanced force
C. are equivalent
D. produce a moment of couple
E. can not balance each other
According to law of triangle of forces______________?
A. three forces acting at a point will be in equilibrium
B. three forces acting at a point can be represented by a triangle, each side being proportional to force
C. if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
D. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
E. none of the above
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