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Fluid Mechanics for Chemical Quiz 13


Fluid Mechanics for Chemical Quiz 13

1 / 50

What is the normal range of exit cone angle of a Venturimeter ?

2 / 50

The velocity for subsonic flow in a pipeline________?

3 / 50

The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost is P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet ?

4 / 50

The vent valve provided in a liquid handling centrifugal pump is_____?

5 / 50

Unit of mass velocity is___________?

6 / 50

What causes cavitation in centrifugal pump ?

7 / 50

What causes convective acceleration in fluid flow ?

8 / 50

Viscosity of water at 40?C lies in the range of_____?

9 / 50

Theoretical head developed by a centrifugal pump does not depend upon the ______ the impeller?

10 / 50

Very small pressure difference (< 5 mm water column) can be most conveniently measured by a/an ______ manometer?

11 / 50

The velocity profile for turbulent flow through a closed conduit is________?

12 / 50

Volute type of casing is provided in a centrifugal pump to_____?

13 / 50

Upto what value of ?Mach number?, a fluid may be considered as incompressible ?

14 / 50

Vena-contracta formed during flow of a liquid through an orificemeter has___________?

15 / 50

Two piping system are said to be equivalent, when the _______ are same?

16 / 50

Turbulent flow generally occurs for cases involving___________?

17 / 50

Turbine impeller______?

18 / 50

The velocity distribution in direction normal to the direction of flow in plane Poiseuille flow is_________?

19 / 50

Unsteady uniform flow is represented by flow through a/an__________?

20 / 50

What is the maximum theoretical suction lift (metres) of a reciprocating pump ?

21 / 50

Viscosity of water is about ______ times that of air at room temperature?

22 / 50

To handle smaller quantity of fluid at higher discharge pressure, use a _______ pump?

23 / 50

Two liquids manometer is used for measuring small pressure differences in_____?

24 / 50

The velocity profile exhibited by laminar flow of Newtonian fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an _______ with the apex at the centre line of the pipe?

25 / 50

Velocity head on sudden enlargement in a horizontal pipe is converted into _______ head?

26 / 50

Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an_________?

27 / 50

What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta ?

28 / 50

Volume of liquid displaced by a floating body is equivalent to its__________?

29 / 50

Various efficiencies of a centrifugal pump are related as (where, ?m = mechanical efficiency ?v = volumetric efficiency. ?ma = manometric efficiency ?o = overall efficiency) ?

30 / 50

Vane anemometer ___________?

31 / 50

Two dimensional stream function_________?

32 / 50

Velocity at a certain point in case of streamline flow is__________?

33 / 50

Velocity of liquid hydrocarbon fuels in a pipeline cannot be measured by magnetic flowmeters, because their _______ is very low/small?

34 / 50

Volute of a centrifugal pump should be designed in a fashion, such that the_________?

35 / 50

Unsteady non-uniform flow is represented by flow through a/an__________?

36 / 50

Umf is the minimum fluidisation velocity for a bed of particles. An increase in the superficial gas velocity from 2 Umf to 2.5 Umf results in (all velocities are smaller than the entrainment velocity of the particles) no change in the________?

37 / 50

Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an _________?

38 / 50

What is the normal range of exit cone angle of a Venturimeter ?

39 / 50

The velocity profile for a Bingham plastic fluid flowing (under laminar conditions) in a pipe is___________?

40 / 50

What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water interface? The balloon is of radius 0.1 m and is filled with air ?

41 / 50

Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the_____?

42 / 50

Toothpaste is a___________?

43 / 50

Vena-contracta pressure tapping is at a distance ________ from the position of an orificemeter fitted in a pipe of internal diameter ?d? ?

44 / 50

What is the pipe called which lifts water from a reservoir to a greater height than the initial level in the supply reservoir ?

45 / 50

Weber number is the ratio of inertial force to ______ force?

46 / 50

Velocity distribution for flow between two fixed parallel plates__________?

47 / 50

Venturimeter and orificemeter measures the ______ of the fluid?

48 / 50

Transition length for turbulent flow in smooth pipe is equal to ______ times the pipe diameter?

49 / 50

Water hammer in a pipeline results from the______?

50 / 50

Transition length for a turbulent fluid entering into a pipe is around ______ times the pipe diameter?

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