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Hydraulics and Fluid Mechanics - Civil Engineering - section-1
  1. A streamline is defined as the line

    2. A.

     parallel to central axis flow
    B.

     parallel to outer surface of pipe
    C.

     of equal yelocity in a flow
    D.

     along which the pressure drop is uniform

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  2. The two important forces for a floating body are

    3. A.

     buoyancy, gravity
    B.

     buoyancy, pressure
    C.

     buoyancy, inertial
    D.

     inertial, gravity

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  3. The conditions for the stable equilibrium of a floating body are

    4. A.

     the meta-center should lie above the center of gravity
    B.

     the center of buoyancy and the center of gravity must lie on the same vertical line
    C.

     a righting couple should be formed
    D.

     all the above are correct

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  4. A one dimensional flow is one which

    5. A.

     is uniform flow
    B.

     is steady uniform flow
    C.

     takes place in straight lines
    D.

     involves zero transverse component of flow

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  5. The upper surface of a weir over which water flows is known is

    6. A.

     crest
    B.

     nappe
    C.

     sill
    D.

     weir top

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  6. In the case of steady flow of a fluid, the acceleration of any fluid particle is

    7. A.

     constant
    B.

     variable
    C.

     zero
    D.

     zero under limiting conditions

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  7. Ratio of inertia force to elastic force is known as

    8. A.

     Mach number
    B.

     Froude number
    C.

     Reynold’s number
    D.

     Weber’s number

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  8. The major loss of energy in long pipes is due to

    9. A.

     sudden enlargement
    B.

     sudden contraction
    C.

     gradual contraction or enlargement
    D.

     friction

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  9. For very great pressures, viscosity of moss gases and liquids

    10. A.

     remains same
    B.

     increases
    C.

     decreases
    D.

     shows erratic behaviour

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  10. Which of the following manometer has highest sensitivity

    11. A.

     U-tube with water
    B.

     inclined U-tube
    C.

     U-tube with mercury
    D.

     micro-manometer with water

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