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Civil Engineering :: Applied Mechanics

  1. Power developed by a torque, is

  2. A.

    NT kg m/min

    B.

    \(\frac { 2nNT } { 4500} \) h.p

    C.

    \(\frac { 2nNT } { 60} \) Watts

    D.
    all the above.

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  3. From a solid cylinder of height 8 cm and radius 4 cm, a right circular cone is scooped out on the same base and having the same height as that of the cylinder. The c.g. of the remainder is at a height of

  4. A.

    4.5 cm

    B.

    5.0 cm

    C.

    5.25 cm

    D.

    5.5 cm.

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  5. The unit of moments in M.K.S system, is

  6. A.
    kgm
    B.

    kg/m2

    C.

    kg/sec2

    D.

    kg/sec.

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  7. The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator

  8. A.

    eastward

    B.

    eastward

    C.

    westward

    D.

    southward

    E.

    upward.

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  9. On a mass m describing a circular path of radius r, the centrifugal force

  10. A.

    acts tangentially to the circular path

    B.

    acts towards the centre of rotation

    C.

    acts away from the centre of rotation

    D.

    is \(\frac { mw^2r } { g} \)kfg

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  11. In the structure shown in below figure, the member which carries zero force, is

  12. A.

    AB

    B.

    BC

    C.

    BE

    D.

    BD

    E.

    All the above.

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  13. When a body falls freely under gravitational force, it possesses

  14. A.

    maximum weight

    B.

    minimum weight

    C.

    no weight

    D.

    no effect on its weight.

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  15. A rigid body suspended Vertically at a point and oscillating with a small amplitude under the action of the force of gravity, is called

  16. A.

    simple pendulum

    B.

    compour pendulum

    C.

    Second's pendulum

    D.

    none of these.

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  17. If a ball which is dropped from a height of 2.25 m on a smooth floor attains the height of bounce equal to 1.00 m, the coefficient of the restitution between the ball and floor, is

  18. A.

    0.25

    B.

    0.50

    C.

    0.67

    D.

    0.33

    E.

    0.75

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  19. The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 metres. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is

  20. A.

    5.88 m/sec

    B.

    8.88 m/sec

    C.
    10.88 m/sec
    D.

    12.88 m/sec.

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