Fluid Mechanics for Chemical Quiz 14
1 / 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) ?
2 / 50
What is the value of co-efficient of discharge for square edged circular orifice (for ? = 0.3 to 0.5) ?
3 / 50
Which of the following is a dimensionless parameter ?
4 / 50
Which of the following is the most common pump for pumping either raw sewage or sludge ?
5 / 50
Which of the following can be used to create a flow of gas, where no significant compression is required ?
6 / 50
What is the value of Fanning friction factor f ? for smooth pipe at NRe = 106 approximately ?
7 / 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 ?
8 / 50
When the water is warm, the height to which it can be lifted by a pump__________?
9 / 50
Which of the following is not an advantage of fluidisation from transfer operation point of view ?
10 / 50
Which of the following can be used for the direct measurement of volumetric flow rate of slurry ?
11 / 50
Which of the following is not dimension-less ?
12 / 50
Which is not a variable head meter __________?
13 / 50
What is the unit of kinematic viscosity in SI unit ?
14 / 50
Which of the following fluid forces are not considered in the Navier-Stoke?s equation ?
15 / 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 ?
16 / 50
Which of the following is an undesirable property of a manometric liquid ?
17 / 50
Which of the following conditions must be satisfied for lift force to be developed ?
18 / 50
Which of the following has the minimum compressibility ?
19 / 50
Which of the following is not a dimension-less parameter ?
20 / 50
What is the speed of sound (m/sec) in ordinary water ?
21 / 50
When larger particles e.g., grains are subjected to fluidisation, the corresponding bed produced is termed as the ________ bed?
22 / 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) ?
23 / 50
Which of the following is a Newtonian fluid ?
24 / 50
Which of the following assumptions enables the Euler?s equation of motion to be integrated ?
25 / 50
When the head pumped against is less than the head of the fluid used for pumping, the usual device is a/an________?
26 / 50
What is the ratio of fluid carrying capacity of two pipes having diameters d1 and d2 respectively ?
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 law is followed by the velocity distribution in the turbulent boundary layer ?
29 / 50
When a fluid flows over a solid surface, the_____?
30 / 50
When the momentum of one fluid is used for moving another fluid, such a device is called a/an_______?
31 / 50
When the pipe Reynold?s number is 6000, the flow is generally_____?
32 / 50
Which of the following facilitates close control of flow of fluids ?
33 / 50
Which of the following flow measuring devices is an area meter ?
34 / 50
Which of the following factors does not contribute to the pressure drop in a pipeline ?
35 / 50
Which of the following is the ?Blasius equation?, relating friction factor to the Reynolds number ?
36 / 50
Which of the following is dimensionless ?
37 / 50
Which of the following is most prone to pulsating discharge flow ?
38 / 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) ?
39 / 50
Which is the most efficient and best for measuring very small flow rate of gases ?
40 / 50
Which law/principle of solid mechanics is similar/equivalent to Newton?s law of viscosity in fluid mechanics ?
41 / 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 ?
42 / 50
Which of the fluid forces are not considered in the Reynold?s equation of flow ?
43 / 50
Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ?
44 / 50
Which of the following equations is valid for laminar flow of a fluid through packed bed ?
45 / 50
46 / 50
Which of the following denotes the effect of compressibility in fluid flow ?
47 / 50
Which of the following has the maximum compression ratio ?
48 / 50
Which of the following exemplifies a three dimensional fluid flow ?
49 / 50
Which of the following is not concerned with the fluid-particle interaction ?
50 / 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? ?
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