Related Questions

Power consumption during turbulent flow in agitation tank is proportional to the __________ of the liquid.
A Viscosity
B Thermal conductivity
C Surface tension
D Density
Laminar flow region is said to exist during agitation of a liquid in an agitator, when the value of Reynolds number is
A >10
B >100
For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to
A R
B R2
C R4
D R0.5
During agitation of liquids, the
A Froude number is independent for the curves between power number and Reynolds number in baffled system
B Power number becomes independent of impellers Reynolds number at high Reynolds number, but is dependent on the geometry of the impeller
C Froude number is used to account for the effect of surface (e.g., the centre vortex) on the power number
D All of the above
Which of the following is not accomplished by agitation of liquids in agitators?
A Dispersing gas in liquid
B Blending of immiscible liquids
C Dispersing immiscible liquid in form of emulsion
D Suspending solid particles
The price of sugar increases by 32%. A family reduces its consumption so that expenditure of the sugar is up by 10% only. If the total consumption of sugar before the price rise was 10 kg per month, then the consumption of sugar per month is approximately-
A 8.33 kg
B 8.5 kg
C 8.35 kg
D 8.73 kg
After the increase of price of oil by 40%, a family decided to reduce its oil consumption so that the expenditure for oil goes up by 26% only. If the total consumption of oil before the price rise was 10 kg per month, then what is the current consumption of oil per month (in kg)?
A 8
B 8.50
C 9
D None of these
Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the
A Length of the pipe
B Diameter of the pipe
C Density of the fluid
D Velocity of the fluid
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
A $$\frac{{\text{Q}}}{2}$$
B $$\frac{{\text{Q}}}{4}$$
C $$\frac{{\text{Q}}}{8}$$
D $$\frac{{\text{Q}}}{{16}}$$
The velocity at which the flow changes from laminar flow to turbulent flow is called
A Critical velocity
B Velocity of approach
C Sub-sonic velocity
D Super-sonic velocity

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