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

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

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Hydraulics and Fluid Mechanics in ME
Surface tension

Is also known as capillarity
Decreases with fall in temperature
Is a function of the curvature of the interface
Acts in the plane of the interface normal to any line in the surface

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