Fluid Mechanics for Chemical Quiz 14

1 / 50

What is the value of Fanning friction factor f ? for smooth pipe at NRe = 106 approximately ?

2 / 50

Which of the following factors does not contribute to the pressure drop in a pipeline ?

3 / 50

What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe) ?

4 / 50

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

5 / 50

Which of the following is not dimension-less ?

6 / 50

What is the unit of kinematic viscosity in SI unit ?

7 / 50

Which of the following is not a dimension-less parameter ?

8 / 50

Which of the following facilitates close control of flow of fluids ?

9 / 50

When the head pumped against is less than the head of the fluid used for pumping, the usual device is a/an________?

10 / 50

When a fluid flows over a solid surface, the_____?

11 / 50

Which of the following has the maximum compression ratio ?

12 / 50

Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter ?d? ?

13 / 50

What is the ratio of the velocity at the axis of the pipe to the mean velocity of flow in case of pipe flow under viscous condition ?

14 / 50

What is the value of co-efficient of discharge for square edged circular orifice (for ? = 0.3 to 0.5) ?

15 / 50

Which of the following exemplifies a three dimensional fluid flow ?

16 / 50

Which is the most efficient and best for measuring very small flow rate of gases ?

17 / 50

When the pipe Reynold?s number is 6000, the flow is generally_____?

18 / 50

Which of the following is dimensionless ?

19 / 50

Which of the following is an undesirable property of a manometric liquid ?

20 / 50

Which of the following is a Newtonian fluid ?

21 / 50

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 changes ?

22 / 50

What is the speed of sound (m/sec) in ordinary water ?

23 / 50

24 / 50

Which of the following denotes the effect of compressibility in fluid flow ?

25 / 50

Which is the correct relationship for a centrifugal pump? (Where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm) ?

26 / 50

Which of the following is a dimensionless parameter ?

27 / 50

Which of the following is most prone to pulsating discharge flow ?

28 / 50

Which of the following can be used to create a flow of gas, where no significant compression is required ?

29 / 50

Which of the following is not an advantage of fluidisation from transfer operation point of view ?

30 / 50

Which of the following assumptions enables the Euler?s equation of motion to be integrated ?

31 / 50

What is the ratio of fluid carrying capacity of two pipes having diameters d1 and d2 respectively ?

32 / 50

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

33 / 50

Which of the following conditions must be satisfied for lift force to be developed ?

34 / 50

Which of the following is the most common pump for pumping either raw sewage or sludge ?

35 / 50

Which of the following has the minimum compressibility ?

36 / 50

Which of the fluid forces are not considered in the Reynold?s equation of flow ?

37 / 50

When the water is warm, the height to which it can be lifted by a pump__________?

38 / 50

Which of the following can be used for the direct measurement of volumetric flow rate of slurry ?

39 / 50

When the momentum of one fluid is used for moving another fluid, such a device is called a/an_______?

40 / 50

Which of the following is the ?Blasius equation?, relating friction factor to the Reynolds number ?

41 / 50

What is the shear rate at the pipe wall, in case of laminar flow of Newtonian fluids in a pipe of diameter ?D? & length ?L? incurring a pressure drop ??p? with average velocity ?Vavg? ?

42 / 50

Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (?0) with age/time (t) (where, ? = roughness of the surface after time?t?. ? = a co-efficient to be experimentally determined) ?

43 / 50

Which law is followed by the velocity distribution in the turbulent boundary layer ?

44 / 50

Which is not a variable head meter __________?

45 / 50

Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ?

46 / 50

Which of the following equations is valid for laminar flow of a fluid through packed bed ?

47 / 50

Which of the following is not concerned with the fluid-particle interaction ?

48 / 50

Which of the following flow measuring devices is an area meter ?

49 / 50

Which of the following fluid forces are not considered in the Navier-Stoke?s equation ?

50 / 50

What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate ?

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