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Mechanical Engineering :: Hydraulics and Fluid Mechanics

  1. Reynold's number is the ratio of the inertia force to thesurface tension force

  2. A.

    surface tension force

    B.

    viscous force

    C.

    gravity force

    D.

    elastic force


  3. A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is

  4. A.

    3.53 kN

    B.

    33.3 kN

    C.

    35.3 kN

    D.

    none of these


  5. A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

  6. A.

    equal to

    B.

    less than

    C.

    more than


  7. The total pressure on an immersed surface inclined at an angle θ with the liquid surface is

  8. A.

    wA

    B.

    wx

    C.

    wAx

    D.

    wAx/sin θ


  9. Turbulent flow takes place at high velocities.

  10. A.

    Agree

    B.

    Disagree