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Civil Engineering :: Hydraulics and Fluid Mechanics - Civil Engineering

  1. Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be

  2. A.

     1000 kg

    B.

     4000 kg

    C.

     2000 kg

    D.

     8000 kg


  3. The value of mass density in kgsecVm4 for water at 0°C is

  4. A.

     1

    B.

     1000

    C.

     100

    D.

     101.9


  5. The increase of temperature results in

  6. A.

     increase in viscosity of gas

    B.

     increase in viscosity of liquid

    C.

     decrease in viscosity of gas

    D.

     decrease in viscosity of liquid


  7. A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is

  8. A.

     0.83

    B.

     0.6

    C.

     0.4

    D.

     0.3


  9. The bulk modulus of elasticity with increase in pressure

  10. A.

     increases

    B.

     decreases

    C.

     remains constant

    D.

     increases first upto certain limit and then decreases


  11. Choose the correct relationship

  12. A.

     specific gravity = gravity x density

    B.

     dynamicviscosity = kinematicviscosity x density

    C.

     gravity = specific gravity x density

    D.

     kinematicviscosity = dynamicviscosity x density


  13. If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is

  14. A.

     1

    B.

     4/3

    C.

     2

    D.

     4


  15. Units of surface tension are

  16. A.

     energy/unit area

    B.

     distance

    C.

     both of the above

    D.

     it has no units


  17. Dimensions of surface tension are

  18. A.

     MlL°T2

    B.

     MlL°Tx

    C.

     MlL r2

    D.

     MlL2T2


  19. Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem

  20. A.

     Venturimeter

    B.

     Orifice plate

    C.

     pitot tube

    D.

     all of the above