Home / Chemical Engineering / Fluid Mechanics :: Section 12

Chemical Engineering :: Fluid Mechanics

  1. Drag co-efficient for motion of spherical particles in a stationary fluid in the stoke's law range is

  2. View Answer

    Workspace

    Discuss Discuss in Forum


  3. Design of the casing of centrifugal pump should be such as to minimise the

  4. A.
    back flow through impeller
    B.
    loss of kinetic head
    C.
    loss of static head
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. Which of the following is used for pumping crude oil from oil well ?

  6. A.
    Single stage centrifugal pump
    B.
    Gear pump
    C.
    Screw pump
    D.
    Duplex/triplex reciprocating pump

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. The energy loss in flow through ven-turimeter is less than that through flow nozzle, because in case of a flow nozzle, the

  8. A.
    length is shorter.
    B.
    throat diameter is more.
    C.
    sudden expansion of flow in the downstream occurs.
    D.
    distance between the throat and the inlet is more.

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. __________ flow means the flow of incompressible fluid with no shear.

  10. A.
    Potential
    B.
    Streamline
    C.
    Creep
    D.
    Boundary layer

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. The continuity equation

  12. A.
    relates mass flow rate along a stream tube.
    B.
    relates work and energy.
    C.
    stipulates that Newton's second law of motion must be satisfied at every point in the fluid.
    D.
    none of these.

    View Answer

    Workspace

    Discuss Discuss in Forum


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

  14. 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


  15. Pressure drop in a packed bed for laminar flow is given by the __________ equation.

  16. A.
    Kozney-Karman
    B.
    Blake-Plummer
    C.
    Leva's
    D.
    Fanning friction factor

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. The fluid velocity varies as the cube of the cylinderical pipe diameter in case of steady state laminar flow at constant pressure drop for __________ fluid.

  18. A.
    Newtonion
    B.
    pseudoplastic
    C.
    dilatent
    D.
    Bingham plastic

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Stoke's law is valid, when NRe, p is less than

  20. A.
    2
    B.
    100
    C.
    2100
    D.
    700

    View Answer

    Workspace

    Discuss Discuss in Forum