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Fluid Mechanics

Fluid Mechanics
For laminar flow of a shear thinning liquid in a pipe, if the volumetric flow rate is doubled, the pressure gradient will increase by a factor of

>2
43832
2

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Fluid Mechanics
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

Q/16
Q/4
Q/8
Q/2

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Fluid Mechanics
Cp/Cv is termed as

Prandtl number
Mach number
Adiabatic constant
Weber number

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Fluid Mechanics
Cavitation in a centrifugal pump can be avoided by keeping the

Outlet pressure high
Inlet pressure low
Outlet pressure low
Inlet pressure high

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Fluid Mechanics
Terminal velocity is

None of these
A fluctuating velocity
A constant velocity with no acceleration
Attained after moving one-half of total distance

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Fluid Mechanics
Scale up of agitator design requires

All of these
Dynamic similarity only
Both geometrical and dynamic similarity
Geometrical similarity only

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