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Chemical Engineering :: Fluid Mechanics

  1. A globe valve is the most suitable for applications, in which

  2. A.
    fluid flow control is required.
    B.
    fluid contains dispersed solid particles.
    C.
    valve is required to be either fully open or fully closed.
    D.
    one way flow is required.

  3. __________ isused for measuring the static pressure exerted on the wall by a fluid flowing parallel to the wall in a pipeline.

  4. A.
    Venturimeter
    B.
    Pressure gauge
    C.
    Pitot tube
    D.
    Orificemeter

  5. One stoke (unit of kinematic viscosity) is equivalent to

  6. A.
    1 cm2/second
    B.
    1 m2/second
    C.
    1 gm/cm. second
    D.
    1 kg . m/second

  7. Air vessel of a reciprocating pump is initially filled with

  8. A.
    atmospheric air
    B.
    compressed air
    C.
    water
    D.
    none of these

  9. The ratio of inertial forces to gravity forces is called the __________ number.

  10. A.
    Mach
    B.
    Froude
    C.
    Euler
    D.
    Weber

  11. Power required by a centrifugal pump is proportional to (where, D = diameter, N = r.p.m)

  12. A.
    N2D3
    B.
    ND2
    C.
    N2D
    D.
    N3D5

  13. Equivalent length of a pipe fitting is

  14. A.
    dependent on Reynolds number.
    B.
    independent of Reynolds number.
    C.
    dependent on the length of the pipe.
    D.
    none of these.

  15. Buckingham-π theorem states that in any physical problem including 'n' quantities having 'm' diamensions, the quantities can be arranged into __________ independent dimensionless parameters.

  16. A.
    m
    B.
    n
    C.
    n-m
    D.
    n/m

  17. A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an __________ fluid.

  18. A.
    Newtonion
    B.
    Non-Newtonion
    C.
    ideal
    D.
    incompressible

  19. Existence of boundary layer in fluid flow is because of the

  20. A.
    surface tension
    B.
    fluid density
    C.
    fluid viscosity
    D.
    gravity forces