Hydraulics and Fluid Mechanics in ME
The kinematic viscosity is the

Product of absolute viscosity and mass of the liquid
Product of absolute viscosity and density of the liquid
Ratio of absolute viscosity to the density of the liquid
Ratio of density of the liquid to the absolute viscosity

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Hydraulics and Fluid Mechanics in ME
The purpose of a surge tank is

To eliminate water hammer possibilities
All of these
To control the pressure variations due to rapid changes in the pipe line flow
To regulate flow of water to turbines by providing necessary retarding head of water

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