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Civil Engineering :: Applied Mechanics and Graphic Statics

  1. Pick up the incorrect statement from the following. In a simple harmonic motion

  2. A.

     Velocity is maximum at its mean position

    B.

     Velocity is minimum at the end of the stroke

    C.

     Acceleration is minimum at the end of the stroke

    D.

     Acceleration is zero at the mean position


  3. Pick up the incorrect statement from the following. In case of suspension bridge due to rise in temperature,

  4. A.

     Dip of the cable increases

    B.

     Length of the cable increases

    C.

     Dip of the cable decreases

    D.

     None of these


  5. Impulse can be obtained from a

  6. A.

     Force-displacement diagram

    B.

     Force-time diagram

    C.

     Velocity-time diagram

    D.

     Velocity-displacement diagram


  7. The angle of friction is:

  8. A.

     The ratio of the friction and the normal reaction

    B.

     The force of friction when the body is in motion

    C.

     The angle between the normal reaction and the resultant of normal reaction and limiting friction

    D.

     The force of friction at which the body is just about to move


  9. M.I. of a thin ring (external diameter D, internal diameter d) about an axis perpendicular to the plane of the ring, is

  10. A.

     π/64 (D⁴ + d⁴)

    B.

     π/32 (D⁴ - d⁴)

    C.

     π/32 (D⁴ + d⁴)

    D.

     π/32 (D⁴ × d⁴)


  11. It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to

  12. A.

     f

    B.

     1/f

    C.

     1/f²

    D.

     f²


  13. A funicular polygon cannot be made to pass through

  14. A.

     One specified point

    B.

     Two specified points

    C.

     Three specified points

    D.

     More than three specified points


  15. A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is

  16. A.

     16 m/sec

    B.

     18 m/sec

    C.

     20 m/sec

    D.

     22 m/sec


  17. If the angle of projection is double the angle of inclination (α) of the plane on which particle is projected, the ratio of times of flight up the inclined plane and down the inclined plane, will be

  18. A.

     ½ cos α

    B.

     ½ sin α

    C.

     ½ tan α

    D.

     2 cos α


  19. One end of an elastic string of natural length / and modulus X is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance x, held at rest and then released. The motion is

  20. A.

     a simple harmonic motion

    B.

     a rectilinear motion with constant speed

    C.

     a damped oscillatory motion

    D.

     none of the above