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Civil Engineering :: Hydraulics and Fluid Mechanics - Civil Engineering

  1. Thee horizontal component of buoyant force is

  2. A.

     negligible

    B.

     same as buoyant force

    C.

     zero

    D.

     none of the above

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  3. Normal depth in open channel flow is the depth of flow corresponding to

  4. A.

     steady flow

    B.

     unsteady flow

    C.

     laminar flow

    D.

     uniform flow

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  5. Metacentric height is given as the distance between

  6. A.

     the center of gravity of the body andthe meta center

    B.

     the center of gravity of the body and the center of buoyancy

    C.

     the center of gravity of the body and the center of pressure

    D.

     center of buoyancy and metacentre

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  7. The theoretical value of coefficient of contraction of a sharp edged orifice is

  8. A.

     0.611

    B.

     0.85

    C.

     0.98

    D.

     1.00

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  9. The discharge of a liquid of kinematic viscosity 4 cm²/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is

  10. A.

     laminar flow

    B.

     transition flow

    C.

     turbulent flow

    D.

     not predictable from the given data

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  11. Separation of flow occurs when

  12. A.

     the pressure intensity reaches a minimum

    B.

     the cross-section of a channel is reduced

    C.

     the boundary layer comes to rest

    D.

     all of the above

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  13. Two dimensional flow occurs when

  14. A.

     the direction and magnitude of the velocity at all points are identical

    B.

     the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

    C.

     the magnitude and direction of the velocity do not change from point to point in the fluid

    D.

     the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

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  15. Uniform flow occurs when

  16. A.

     the flow is steady

    B.

     the flow is streamline

    C.

     size and shape of the cross section in a particular length remain constant

    D.

     size and cross section change uniformly along length

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  17. Surface tension has the units of

  18. A.

     newtons/m

    B.

     newtons/m

    C.

     new tons/m

    D.

     newtons

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  19. The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is

  20. A.

     1/3

    B.

     1/4

    C.

     1/2

    D.

     2/3

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