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Mechanical Engineering :: Hydraulics and Fluid Mechanics

  1. The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)

  2. A.

    2gH

    B.

    \(H \sqrt{2g}\)

    C.

    \(2g\sqrt{H}\)

    D.

    \(\sqrt{2gH}\)


  3. According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.

  4. A.

    equal to

    B.

    directly proportional

    C.

    inversely proportional


  5. The force per unit length is the unit of

  6. A.

    surface tension

    B.

    compressibility

    C.

    capillarity

    D.

    viscosity


  7. The shear stress-strain graph for a non-newtonian fluid is a curve.

  8. A.

    Correct

    B.

    Incorrect


  9. The intensity of pressure at any point, in a liquid, is __________ to the depth of liquid from the surface.

  10. A.

    equal

    B.

    directly proportional

    C.

    inversely proportional