Fluid Mechanics for Chemical Quiz 14

1 / 50

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

2 / 50

**Which of the following is a dimensionless parameter ?**

3 / 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? ?**

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

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

8 / 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 ?**

9 / 50

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

10 / 50

**Which of the following is dimensionless ?**

11 / 50

**Which of the following has the minimum compressibility ?**

12 / 50

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

13 / 50

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

14 / 50

**Which of the following exemplifies a three dimensional fluid flow ?**

15 / 50

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

16 / 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) ?**

17 / 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) ?**

18 / 50

**Which is not a variable head meter __________?**

19 / 50

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

20 / 50

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

21 / 50

**Which of the following is a Newtonian fluid ?**

22 / 50

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

23 / 50

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

24 / 50

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

25 / 50

**Which of the following is not dimension-less ?**

26 / 50

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

27 / 50

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

28 / 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) ?**

29 / 50

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

30 / 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 ?**

31 / 50

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

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

**What is the unit of kinematic viscosity in SI unit ?**

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

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

42 / 50

**Which of the following has the maximum compression ratio ?**

43 / 50

**When a fluid flows over a solid surface, the_____?**

44 / 50

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

45 / 50

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

46 / 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 ?**

47 / 50

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

48 / 50

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

49 / 50

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

50 / 50

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

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