Hydraulics and Fluid Mechanics in ME
Surface tension

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

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Hydraulics and Fluid Mechanics in ME
A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if

Length of both the pipes is same
Loss of head and discharge of both the pipes is same
Loss of head and velocity of flow in both the pipes is same
Diameter of both the pipes is same

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