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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