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Chemical Engineering :: Fluid Mechanics

  1. For pumping slurry, one can use a __________ pump.

  2. A.
    reciprocating
    B.
    diaphargm
    C.
    centrifugal
    D.
    pneumatic

  3. Bernoulli's equation describes the

  4. A.
    mechanical energy balance in potential flow.
    B.
    kinetic energy balance in laminar flow.
    C.
    mechanical energy balance in turbulent flow.
    D.
    mechanical energy balance in boundary layer.

  5. For laminar flow of a fluid through a packed bed of spheres of diameter d, the pressure drop per unit length of bed depends upon the sphere diameter as

  6. A.
    d
    B.
    d2
    C.
    d4
    D.

  7. Which law/principle of solid mechanics is similar/equivalent to Newton's law of viscosity in fluid mechanics ?

  8. A.
    Archimedes principle.
    B.
    Newton's second law of motion.
    C.
    Hooke's law.
    D.
    Newton's third law of motion.

  9. When larger particles e.g., grains are subjected to fluidisation, the corresponding bed produced is termed as the __________ bed.

  10. A.
    spouted
    B.
    sluggish
    C.
    boiling
    D.
    teeter

  11. Minimum fluidisation velocity for a specific system depends upon the

  12. A.
    particle size.
    B.
    fluid viscosity.
    C.
    density of both the particle & the fluid.
    D.
    all (a), (b) and (c).

  13. Potential flow is characterised by the

  14. A.
    irrotational and frictionless flow.
    B.
    irrotational and frictional flow.
    C.
    one in which dissipation of mechanical energy into heat occurs.
    D.
    formation of eddies within the stream.

  15. For the production of very high vacuum, a __________ pump is normally used.

  16. A.
    diffusion
    B.
    centrifugal
    C.
    jet ejector
    D.
    piston

  17. In parallel pipe problems, the

  18. A.
    head loss is the same through each pipe.
    B.
    discharge is the same through all the pipes.
    C.
    total head loss is equal to the sum of the head losses through each pipe.
    D.
    none of these.

  19. Fluid flow through a packed bed is represented by the __________ equation.

  20. A.
    Fanning's
    B.
    Ergun's
    C.
    Hagen-Poiseuille's
    D.
    none of these