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Chemical Engineering :: Fluid Mechanics

  1. A hydraulic accumulator comprises of

  2. A.

     A storage device and a control valve

    B.

     A cylinder and a plunger

    C.

     Two pistons and two cylinders

    D.

     A storage tank and a ram pump


  3. It is possible to integrate an automatic flow controller to a

  4. A.

     Flow nozzle

    B.

     Venturimeter

    C.

     Rotameter

    D.

     None of these


  5. The maximum delivery pressure of a reciprocating compressor may be about __________ kg/cm².

  6. A.

     1000

    B.

     2000

    C.

     3000

    D.

     4000


  7. Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε0) with age/time (t) (where, ε = roughness of the surface after time't'. α = a co-efficient to be experimentally determined)?

  8. A.

     ε = ε0 + α.t

    B.

     ε = ε0 + α.t²

    C.

     ε = ε0 + α.t³

    D.

     ε = ε0 + α.t⁴


  9. The capacity of a centrifugal pump Can be increased by increasing the

  10. A.

     Impeller diameter or speed

    B.

     Number of pumps and joining them in series

    C.

     Number of pumps and joining them in parallel

    D.

     All of the above


  11. The Reynolds number for an ideal fluid flow is

  12. A.

     4

    B.

     2100-4000

    C.

     4000

    D.

     ∞


  13. What type of motion the fluid element undergoes, when it changes from one position to another position, such that the angle between the two sides change?

  14. A.

     Rotation

    B.

     Translation

    C.

     Linear deformation

    D.

     Angular deformation


  15. Pascal law is not applicable for a/an __________ fluid.

  16. A.

     Accelerating frictionless

    B.

     Static

    C.

     Uniformly moving

    D.

     None of these


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

  18. 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


  19. Fanning equation is given by ∆p/ρ = 4f. L/D . v²/2g<.sub>c . It is applicable to __________ region flow.

  20. A.

     Transition

    B.

     Laminar

    C.

     Turbulent

    D.

     Both B and C