Hydraulics and Fluid Mechanics in ME
Runaway speed of a hydraulic turbine is

The speed corresponding to maximum overload permissible
The speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open
The speed at which turbine runner will be damaged
Full load speed

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Hydraulics and Fluid Mechanics in ME
Surface tension

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

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