Hydraulics and Fluid Mechanics in ME
The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is

High speed with axial flow at outlet
Medium speed with radial flow at outlet
Slow speed with radial flow at outlet
High speed with radial flow at outlet

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

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

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Hydraulics and Fluid Mechanics in ME
Mach number is significant in

simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls
supersonics, as with projectiles and jet propulsion
all of fhe above
full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

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