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Civil Engineering :: Applied Mechanics and Graphic Statics

  1. Pick up the correct statement from the following:

  2. A.

     If two equal and perfectly elastic smooth spheres impinge directly, they interchange their velocities

    B.

     If a sphere impinges directly on an equal sphere which is at rest, then a fraction ½(1 - e2) the original kinetic energy is lost by the impact

    C.

     If two equal spheres which are perfectly elastic impinge at right angles, their direction after impact will still be at right angles

    D.

     All the above

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  3. Pick up the correct statement from the following:

  4. A.

     Nature plays an important role in the launch of a satellite

    B.

     The earth's gravity reduces the speed of a satellite by 32 km per second

    C.

     The gravitational force relents as the satellite climbs higher

    D.

     All the above

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  5. Pick up the incorrect statement from the following:

  6. A.

     The C.G. of a circle is at its centre

    B.

     The C.G. of a triangle is at the intersection of its medians

    C.

     The C.G. of a rectangle is at the intersection of its diagonals

    D.

     The C.G. of a semicircle is at a distance of r/2 from the centre

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  7. The time period of a simple pendulum depends on
    (i) Mass of suspended particle
    (ii) Length of the pendulum
    (iii) Acceleration due to gravity

  8. A.

     Only (i)

    B.

     Both (ii) and (iii)

    C.

     Both (i) and (iii)

    D.

     All are correct

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  9. The frequency of oscillation on moon as compared to that on earth, will be

  10. A.

     2.44 times more

    B.

     2.44 times less

    C.

     3 times less

    D.

     3 times more

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  11. The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane

  12. A.

     To be zero

    B.

     To be maximum

    C.

     To be minimum

    D.

     None of these

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  13. The intrinsic equation of catenary is

  14. A.

     S = c tan ψ

    B.

     y = c cosh x/c

    C.

     y = c cosh ψ

    D.

     y = c sinh ψ

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  15. Cartesian form of the equation of catenary is

  16. A.

     y = c cosh x/c

    B.

     y = c sinh x/c

    C.

     y = c tan x/c

    D.

     y = c sin x/c

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  17. The instantaneous centre of a member lies at the point of intersection of two lines drawn at the ends of the member such that the lines are inclined to the direction of motion of the ends at

  18. A.

     30°

    B.

     45°

    C.

     60°

    D.

     90°

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  19. If two forces are in equilibrium, then the forces must
    (i) Be equal in magnitude
    (ii) Be opposite in sense
    (iii) Act along the same line

  20. A.

     (i) and (ii)

    B.

     (i) and (iii)

    C.

     Only (i)

    D.

     All (i), (ii) and (iii)

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