Fluid Mechanics for Chemical Quiz 13
1 / 50
Unsteady non-uniform flow is represented by flow through a/an__________?
2 / 50
Viscosity of water is about ______ times that of air at room temperature?
3 / 50
Toothpaste is a___________?
4 / 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________?
5 / 50
Turbulent flow generally occurs for cases involving___________?
6 / 50
The vent valve provided in a liquid handling centrifugal pump is_____?
7 / 50
Various efficiencies of a centrifugal pump are related as (where, ?m = mechanical efficiency ?v = volumetric efficiency. ?ma = manometric efficiency ?o = overall efficiency) ?
8 / 50
Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an _________?
9 / 50
Two piping system are said to be equivalent, when the _______ are same?
10 / 50
Volute of a centrifugal pump should be designed in a fashion, such that the_________?
11 / 50
What causes cavitation in centrifugal pump ?
12 / 50
Volute type of casing is provided in a centrifugal pump to_____?
13 / 50
Unsteady uniform flow is represented by flow through a/an__________?
14 / 50
Weber number is the ratio of inertial force to ______ force?
15 / 50
Water hammer in a pipeline results from the______?
16 / 50
The velocity profile for turbulent flow through a closed conduit is________?
17 / 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 ?
18 / 50
Upto what value of ?Mach number?, a fluid may be considered as incompressible ?
19 / 50
Two liquids manometer is used for measuring small pressure differences in_____?
20 / 50
Unit of mass velocity is___________?
21 / 50
Velocity of liquid hydrocarbon fuels in a pipeline cannot be measured by magnetic flowmeters, because their _______ is very low/small?
22 / 50
The velocity for subsonic flow in a pipeline________?
23 / 50
Transition length for turbulent flow in smooth pipe is equal to ______ times the pipe diameter?
24 / 50
What is the normal range of exit cone angle of a Venturimeter ?
25 / 50
Vena-contracta pressure tapping is at a distance ________ from the position of an orificemeter fitted in a pipe of internal diameter ?d? ?
26 / 50
Viscosity of water at 40?C lies in the range of_____?
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
Velocity at a certain point in case of streamline flow is__________?
29 / 50
What causes convective acceleration in fluid flow ?
30 / 50
Velocity head on sudden enlargement in a horizontal pipe is converted into _______ head?
31 / 50
Velocity distribution for flow between two fixed parallel plates__________?
32 / 50
Transition length for a turbulent fluid entering into a pipe is around ______ times the pipe diameter?
33 / 50
Volume of liquid displaced by a floating body is equivalent to its__________?
34 / 50
Theoretical head developed by a centrifugal pump does not depend upon the ______ the impeller?
35 / 50
Venturimeter and orificemeter measures the ______ of the fluid?
36 / 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?
37 / 50
Turbine impeller______?
38 / 50
Very small pressure difference (< 5 mm water column) can be most conveniently measured by a/an ______ manometer?
39 / 50
What is the maximum theoretical suction lift (metres) of a reciprocating pump ?
40 / 50
What is the pipe called which lifts water from a reservoir to a greater height than the initial level in the supply reservoir ?
41 / 50
The velocity distribution in direction normal to the direction of flow in plane Poiseuille flow is_________?
42 / 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_________?
43 / 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_____?
44 / 50
The velocity profile for a Bingham plastic fluid flowing (under laminar conditions) in a pipe is___________?
45 / 50
To handle smaller quantity of fluid at higher discharge pressure, use a _______ pump?
46 / 50
Vane anemometer ___________?
47 / 50
Vena-contracta formed during flow of a liquid through an orificemeter has___________?
48 / 50
Two dimensional stream function_________?
49 / 50
50 / 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 ?
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