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Fluid Mechanics for Chemical Quiz 6

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Fluid Mechanics for Chemical Quiz 6

1 / 50

In frictional fluid flow, the quantity, (P/?) + (V2/2gc) + gz/gc) is_____?

2 / 50

In a free vortex, the_______?

3 / 50

In a fully turbulent flow (Re > 105) in a pipe of diameter ?d?, for a constant pressure gradient, the dependence of volumetric flow rate of an incompressible fluid is________?

4 / 50

In case of centrifugal fan or blower, the gas capacity varies as ___________?

5 / 50

In an incompressible fluid, the density is______?

6 / 50

In case of turbulent flow of a Newtonian fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)?

7 / 50

In case of supersonic flow of a fluid through pipeline, the ?Mach number? is___________?

8 / 50

In case of Couette flow, the fluid flow is between two large flat parallel plates with_____?

9 / 50

If Blasius or Darcy friction factor is ?f1? then the Fanning friction factor is equal to______?

10 / 50

In case of a pipe exit fitted with a nozzle, the______?

11 / 50

If ?x? is the depth of flow in an open channel of large width, then the hydraulic radius is equal to_________?

12 / 50

In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas) ?

13 / 50

In a dry packed bed, the pressure drop will be changed by increasing the flow rate as___________?

14 / 50

If in a flow field, between any two points, then the flow must be_____?

15 / 50

In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is_____?

16 / 50

In case of a _____ the energy of flow is considerably decreased downstream of the machine?

17 / 50

In case of laminar flow of fluid through a circular pipe, the___________?

18 / 50

In case of turbulent flow of fluid through a circular pipe, the ___________?

19 / 50

In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure _______ the vapor pressure of the liquid at the suction temperature?

20 / 50

In fluid flow, cavitation is caused, if the______?

21 / 50

In a fluidised bed reactor_____?

22 / 50

If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). ?

23 / 50

If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is__________?

24 / 50

In laminar flow through a round tube, the discharge varies ________?

25 / 50

Identification of pipelines carrying different liquids and gases is done by the _____ of the pipe?

26 / 50

If the discharge of a centrifugal pump is throttled, then its suction lift_________?

27 / 50

In hindered settling, the particles are___________?

28 / 50

In a stabilised soap bubble, pressure inside it compared to external pressure is_________?

29 / 50

In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature) ?

30 / 50

In deriving Bernoulli?s equation, fluid is assumed to be_________?

31 / 50

In fluid flow, the stagnation point is defined as a point, where the ______ is zero?

32 / 50

In area meter (e.g., Rotameter), with increase in the fluid flow rate, the_____?

33 / 50

In centrifugal pumps, cavitation occurs, when pressure of the impeller eye or vane becomes________?

34 / 50

In case of end to end connection of two or more pipes in series, the _______ each pipe?

35 / 50

In fluid flow, the boundary layer separation cannot occur_____?

36 / 50

In a/an ______, the flow rate of fluids is obtained by measuring the difference between the impact and the static pressure?

37 / 50

Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of__________?

38 / 50

In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the ______ efficiency?

39 / 50

In isotropic turbulence, the ______ are equal to each other?

40 / 50

In case of a Rotameter, the density of the float material is ______ that of the liquid it replaces?

41 / 50

In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow ?

42 / 50

If the head over the triangular notch is doubled, the discharge will increase by _______ times?

43 / 50

In case of Venturimeter, friction losses are about ______ percent of maximum velocity head?

44 / 50

In case of a centrifugal pump, the theoretical head developed is dependent on the ______ the impeller?

45 / 50

In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of_____?

46 / 50

In magnetic flow meters, voltage generation is_________?

47 / 50

In continuous fluidisation__________?

48 / 50

If more than two branches of pipes are to be connected at the same point, then use a/an__________?

49 / 50

In an incompressible flow of fluid, the fluid _________?

50 / 50

I.D. of 1/4? schedule 40 pipe is 0.364?. I.D. of a 1/2? schedule 40 pipe would be _______ inch?

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