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Fluid Mechanics for Chemical Quiz 2

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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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