Home / Chemical Engineering / Fluid Mechanics :: Section-17

Chemical Engineering :: Fluid Mechanics

  1. Bernoulli's equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli's equation ?
    1. Fluid flow is frictionless & irrotational.
    2. Fluid flow is steady.
    3. Fluid flow is uniform & turbulent.
    4. Fluid is compressible.
    5. Fluid is incompressible.

  2. A.

     1, 3, 3

    B.

     2, 3, 4

    C.

     1, 2, 4

    D.

     1, 3, 4

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. For turbulent flow of an incompressible fluid through a pipe, the flow rate Q is proportional to (Δ P)n, where ΔP is the pressure drop. The value of exponent 'n' is

  4. A.

     1

    B.

     0

    C.

     < 1

    D.

     > 1

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. Sewage sludge is __________ type of non-Newtonion fluid.

  6. A.

     Dilatant

    B.

     Bingham plastic

    C.

     Pseudo plastic

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. __________ pumps are axial flow pumps.

  8. A.

     Turbine

    B.

     Propeller

    C.

     Diffuser

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will __________ the gas discharge pressure.

  10. A.

     Increase

    B.

     Decrease

    C.

     Not change

    D.

     Exponentially decrease

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. The energy loss over a length of pipeline according to Darcy-Weisbach equation for pipe flow is _________ the mean velocity of flow.

  12. A.

     Directly proportional to

    B.

     Directly proportional to square of

    C.

     Inversely proportional to

    D.

     Inversely proportional to square of

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. A pitched-blade turbine draws __________ a straight blade turbine.

  14. A.

     Less power than

    B.

     More power than

    C.

     Same power as

    D.

     Data insufficient to predict

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. Viscosity of a liquid decreases __________ with rise in temperature.

  16. A.

     Exponentially

    B.

     Linearly

    C.

     Logarithmically

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. In isotropic turbulence, the __________ are equal to each other.

  18. A.

     Temporal velocity components

    B.

     Mean square of velocity fluctuations in the three co-ordinate directions

    C.

     Root mean square of velocity fluctuations in the three co-ordinate directions

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Bernoulli's equation for steady, frictionless, continuous flow states that the __________ at all sections is same.

  20. A.

     Total pressure

    B.

     Total energy

    C.

     Velocity head

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum