Fluid Mechanics for Chemical Quiz 5

1 / 50

**For the production of very high vacuum, a ______ pump is normally used?**

2 / 50

**For the same terminal conditions and fitting size, the least friction loss is incurred in a/an ?**

3 / 50

**For the same flow rate of a fluid, the pressure drop is the least for ______?**

4 / 50

**Hot wire anemometer is used to measure the__________?**

5 / 50

**Froude number is the ratio of___________?**

6 / 50

**For pipes that must be broken at intervals for maintenance, the connector used should be a/an___________?**

7 / 50

**For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance ?d? measured from the wall of the pipe and the friction velocity ?v?, and it follows a ______ relationship?**

8 / 50

**For turbulent flow of an incompressible fluid through a pipe, the flow rate ?Q? is proportional to (? P)n, where ?P is the pressure drop. The value of exponent ?n? is__________?**

9 / 50

**For steady ideal fluid flow, the Bernoulli?s equation states that the__________?**

10 / 50

**For one dimensional flow of an incompressible fluid in unsteady state in x-direction, the continuity equation is given by________?**

11 / 50

**Gradually varying fluid flow is an example of _____ flow?**

12 / 50

**For pipe flows, head is proportional to __________ at constant capacity(where, D = pipe diameter) ?**

13 / 50

**For liquid flow through a packed bed, the superficial velocity as compared to average velocity through the channel in the bed is_________?**

14 / 50

**For the free settling of a spherical particle through a fluid, the slope of, CD-log NRe, plot is______?**

15 / 50

**For ideally incompressible fluid, the Mach number will be ___________?**

16 / 50

**Friction produced by the formation of wakes is called the _______ friction?**

17 / 50

**For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to______?**

18 / 50

**For very low pressure and high discharge rate, the compressor used is a/an _______ compressor?**

19 / 50

**Glass pipes can be joined by___________?**

20 / 50

**For laminar flow through a closed conduit______?**

21 / 50

**Hydraulic diameter for non-circular ducts is equal to ___________ times the area of flow divided by the perimeter?**

22 / 50

**For turbulent flow of Newtonian fluid in a circular cross-section pipe, the ratio of maximum to average fluid velocity is _________?**

23 / 50

**For laminar flow of Newtonian fluids through a circular pipe, for a given pressure drop and length & diameter of pipe, the velocity of fluid is proportional to (where, ? = fluid viscosity ) ?**

24 / 50

**For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is ________?**

25 / 50

**For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance) ?**

26 / 50

**Hydraulic intensifier is used for increasing the _____?**

27 / 50

**Forces acting on a particle settling in fluid are ______ forces?**

28 / 50

**For laminar flow of a fluid through a packed bed of spheres of diameter d, the pressure drop per unit length of bed depends upon the sphere diameter as__________?**

29 / 50

**Friction factor for a hydraulically smooth pipe at NRe = 2100 is f1. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of NRe, will________?**

30 / 50

**High specific speed of a pump implies that, it is a/an ______ pump?**

31 / 50

**Hydraulic ______ works on the principle of Pascal?s law of transmission of fluid pressure?**

32 / 50

**For the manometer set up shown in the figure, the pressure difference PA ? PB is given by__________?**

33 / 50

**Higher specific speed (200-500) of a centrifugal pump indicates that the pump is of _______ flow type?**

34 / 50

**Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will ______ the gas discharge pressure?**

35 / 50

**Hydraulic radius is the ratio of ______?**

36 / 50

**For laminar flow of Newtonian fluid in a circular pipe, the velocity distribution is a function of the distance ?d? measured from the centre line of the pipe, and it follows a _______ relationship?**

37 / 50

**Froude number is not a factor___________?**

38 / 50

**Function of air vessel provided in a reciprocating pump is to__________?**

39 / 50

**For flow through a venturi at a particular discharge, the correct relationships among heads at points X, Y, and Z are___________?**

40 / 50

**For flow through a venturi at a particular discharge, the correct relationships among velocities at point X, Y and Z would be ___________?**

41 / 50

**For water, when the pressure increases, the viscosity__________?**

42 / 50

**For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is_____?**

43 / 50

**For Laminar flow through a packed bed, the pressure drop is proportional to (Vs is the superficial liquid velocity and Dp is the particle diameter) ?**

44 / 50

**For the transfer of solution of thick slurry, the pump used is a ______ pump?**

45 / 50

**Gear pump__________?**

46 / 50

**Gradually varied flow in open channel is a/an _____ flow?**

47 / 50

**Horsepower requirement for given pump capacity depends upon the________?**

48 / 50

**Hydraulic mean radius for flow through packed bed of spherical particle of size, ?Dp, with porosity ??? is_________?**

49 / 50

**Hydraulic mean depth (Dm) for a circular pipe of diameter ?D? flowing full is 0.25 D. For a circular channel, at Dm = 0.3 D, gives the condition for the maximum ?**

50 / 50

**Head developed by a centrifugal pump depends on its_____?**

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