Fluid Mechanics for Chemical Quiz 2

1 / 50

**A Pitot tube indicates 5 cm of water (manometer) when it is being used for measuring velocity of air. The velocity of air in m/sec is_____?**

2 / 50

**Bernoulli?s equation for steady, frictionless, continuous flow states that the _______ at all sections is same?**

3 / 50

**At a constant speed of the centrifugal pump, it?s ______ the impeller diameter?**

4 / 50

**A streamline is a line in flow field __________?**

5 / 50

**An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonian fluid beyond yield stress. Which of the following is an ideal plastic ?**

6 / 50

**A Venturimeter measures the_____?**

7 / 50

**A rectangular surface 3? ? 4?, has the lower 3 edge horizontal and 6? below a free oil surface (sp. gr. 0.8). The surface inclination is 300 with the horizontal. The force on one side of the surface is (where, y = specific weight of water) ?**

8 / 50

**Bernoulli?s equation does not apply to the functioning of a/an___________?**

9 / 50

**Acceleration head in a reciprocating pump_________?**

10 / 50

**A weir is used to measure the large water discharge rate from a river or from an open channel. A weir is not of ________ shape?**

11 / 50

**Bernoulli?s equation accounts for the_______?**

12 / 50

**An ideal nozzle design aims at_________?**

13 / 50

**As per Newton?s law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to (where, ? = fluid viscosity) ?**

14 / 50

**Air vessel of a reciprocating pump is initially filled with_____?**

15 / 50

**Absolute viscosity of a fluid is a function of the __________ of the fluid?**

16 / 50

**A special type of liquid transporting device is the diffuser pump, in which ______ are minimised?**

17 / 50

**Air vessel fitted to a reciprocating pump______?**

18 / 50

**Bernoulli?s equation describes the ________?**

19 / 50

**Actual lift of a pump is always less than the theoretical lift and is limited by the_____?**

20 / 50

**At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump ?**

21 / 50

**Applying a pressure drop across a capillary results in a volumetric flow rate ?Q? under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is______?**

22 / 50

**Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will________?**

23 / 50

**Bernoulli?s equation is not applicable, when the flow is_____?**

24 / 50

**A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by_________?**

25 / 50

**Boundary layer separation is caused by the__________?**

26 / 50

**A pressure head of 320 metres of water in meters of CCl4 (sp.gr = 1.6) will be___________?**

27 / 50

**Bed pressure drop in an air fluidised bed of catalyst particles (?p = 200 kg/m3, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is_________?**

28 / 50

**An equipotential line is ______ to the velocity vector at every point?**

29 / 50

**A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation ?**

30 / 50

**A tube is specified by its______?**

31 / 50

**A streamline is__________?**

32 / 50

**Boiler feed water pump is usually a _______ pump?**

33 / 50

**A pressure of 10 m head of water is equivalent to _______ kN/m2?**

34 / 50

**A Rotameter works on the principle of ________ pressure drop?**

35 / 50

**Air vessel provided in a reciprocating pump is for___________?**

36 / 50

**A relief valve___________?**

37 / 50

**An ideal fluid is_____?**

38 / 50

**All pipes of a particular nominal size have the same__________?**

39 / 50

**At high Reynolds number__________?**

40 / 50

**A stream tube is that, which has ________ cross-section entirely bounded by stream lines?**

41 / 50

**A stream line is_____?**

42 / 50

**As the velocity V and thus the Reynolds number of a flow past a sphere increases from very low value, the drag force for Re << 1 ?**

43 / 50

**Bernoulli?s equation is dependent on the___________?**

44 / 50

**An isentropic process is the one, in which__________?**

45 / 50

**At low Reynolds number_______?**

46 / 50

**Boundary layer exists in flow__________?**

47 / 50

**Air vessel provided in a reciprocating pump___________?**

48 / 50

**Boundary layer separation is caused by the ______?**

49 / 50

**Applicability of Bernoulli?s equation is limited to a/an ______ fluid, that does not exchange shaft work with the surroundings?**

50 / 50

**Baffles in mixing tanks are provided to___________?**

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