Fluid Mechanics for Chemical Quiz 3

1 / 50

**Cavitation in a pump creates so many undesirable effects. Out of the following, which is not an undesirable effect created by cavitation ?**

2 / 50

**Centrifugal compressors compared to reciprocating compressors___________?**

3 / 50

**Check valve is used for _________ flow?**

4 / 50

**Cavitation occurs in a centrifugal pump when the suction pressure is_________?**

5 / 50

**Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the ________ decreases?**

6 / 50

**Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, ? = surface tension of mercury)______?**

7 / 50

**Creeping flow around a sphere is defined, when particle Reynolds number is_____?**

8 / 50

**Capillary tube method of viscosity measurement is based on the _________?**

9 / 50

**Buckingham-? theorem states that in any physical problem including ?n? quantities having ?m? dimensions, the quantities can be arranged into ______ independent dimensionless parameters?**

10 / 50

**Buoyant force___________?**

11 / 50

**Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f1 and that for smooth pipe is f2. Pick out the correct statement ?**

12 / 50

**Centrifugal pump is normally classified on the basis of the_________?**

13 / 50

**Boundary layer separation occurs when the______?**

14 / 50

**Design of the casing of centrifugal pump should be such as to minimise the_________?**

15 / 50

**Cavitation in a centrifugal pump can be avoided by keeping the___________?**

16 / 50

**Co-efficient of velocity is _____ the coefficient of discharge?**

17 / 50

**Co-efficient of discharge (Cd) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about___________?**

18 / 50

**Dean number is concerned with the______?**

19 / 50

**Centrifugal pumps as compared to reciprocating pumps___________?**

20 / 50

**Cd is always _______ Cc?**

21 / 50

**Colebrook equation for friction factor in turbulent flow is given by, f-0.5 = -4 loge [(?/D) + (1.26/NRe ?F). It reduces to Nikuradse equation for a value of (?/D) equal to ___________?**

22 / 50

**Choking in case of pipe flow means that a_____?**

23 / 50

**Check valves are used________?**

24 / 50

**Dimension of kinematic viscosity is_______?**

25 / 50

**Differential manometer measures the______?**

26 / 50

**Choose the set of pressure intensities that are equivalent ?**

27 / 50

**Curve III in the bellow diagram represents a/an_________?**

28 / 50

**Diaphragm valves are used for handling ________ fluids?**

29 / 50

**Cavitation can be prevented by_________?**

30 / 50

**Disc compensators are provided in large diameter fuel gas carrying pipelines to__________?**

31 / 50

**Brownian movement is prominent in the particle size range of ______ microns in case of settling of a particle in a fluid?**

32 / 50

**Diaphragm pumps are used to transport__________?**

33 / 50

**Deformation drag, which is caused by widespread deformation of fluid around the immersed body______?**

34 / 50

**Centrifugal pump can?t be used to pump _______?**

35 / 50

**Check in a centrifugal pump is_________?**

36 / 50

**Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the________?**

37 / 50

**Boundary layer thickness in turbulent flow over a flat plate increases as(where, d = distance from the leading edge.) ?**

38 / 50

**Cp/Cv is termed as___________?**

39 / 50

**Dimension of surface tension is (where, F = force, L = length) ?**

40 / 50

**Critical velocity in a pipe flow__________?**

41 / 50

**Capacity of a hydraulic accumulator is defined in terms of maximum_______?**

42 / 50

**Cocks are used to control _____?**

43 / 50

**Centre of pressure in an immersed body is _______ the centre of gravity?**

44 / 50

**Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.) ?**

45 / 50

**Choose the correct set of dimensions of viscosity that are equivalent (where, F, M, L, T are dimensions for force, mass, length and time respectively) ?**

46 / 50

**Dimension of absolute viscosity is__________?**

47 / 50

**Cd for the orifice plate varies from _____?**

48 / 50

**Differential manometer measures the_____?**

49 / 50

**Centre of pressure of a plane surface of arbitrary shape immersed vertically in a static mass of fluid_________?**

50 / 50

**Capacity of a rotary gear pump can be varied by___________?**

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