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Chemical Engineering :: Fluid Mechanics

  1. When the pipe Reynold's number is 6000, the flow is generally

  2. A.

     Viscous

    B.

     Laminar

    C.

     Turbulent

    D.

     Transition


  3. Which of the following is a dimensionless parameter?

  4. A.

     Angular velocity

    B.

     Specific weight

    C.

     Kinematic viscosity

    D.

     None of these


  5. For very low pressure and high discharge rate, the compressor used is a/an __________ compressor.

  6. A.

     Axial

    B.

     Reciprocating

    C.

     Rotary

    D.

     None of these


  7. Capacity of a hydraulic accumulator is defined in terms of maximum

  8. A.

     Amount of energy stored

    B.

     Flow rate through accumulator

    C.

     Rate of falling of ram

    D.

     Volume available in the cylinder


  9. Which is not a variable head meter?

  10. A.

     Venturimeter

    B.

     Pitot tube

    C.

     Rotameter

    D.

     None of these


  11. One poise (unit of absolute/dynamic viscosity) is equivalent to one

  12. A.

     Gm/cm². sec

    B.

     Gm/cm. sec

    C.

     Cm²/sec

    D.

     M²/sec


  13. Poise is converted into stoke by

  14. A.

     Multiplying with density (gm/c.c)

    B.

     Dividing by density (gm/c.c)

    C.

     Multiplying with specific gravity

    D.

     Dividing by specific gravity


  15. Fluidised beds are formed, when the

  16. A.

     Fluid friction is zero

    B.

     Gravity force is less than the fluid friction

    C.

     Pressure forces equal gravity forces

    D.

     Sum of the fluid friction and pressure forces is equal and opposite to gravity forces


  17. Isotropic turbulence occurs

  18. A.

     Where there is no velocity gradient

    B.

     At higher temperatures

    C.

     Only in Newtonion fluids

    D.

     None of these


  19. The momentum correction factor for the velocity distribution of laminar flow is

  20. A.

     1.3

    B.

     1.66

    C.

     2.5

    D.

     None of these