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

Full load speed
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
The speed corresponding to maximum overload permissible

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Hydraulics and Fluid Mechanics in ME
A floating body is said to be in a state of stable equilibrium

when its metacentric height is zero
only when its centre of gravity is below its centre of buoyancy
when the metacentre is above the centre of gravity
when the metacentre is below the centre of gravity

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