Hydraulics and Fluid Mechanics in ME
The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is

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

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Hydraulics and Fluid Mechanics in ME
Coefficient of velocity is defined as the ratio of

Actual discharge through an orifice to the theoretical discharge
Actual velocity of jet at vena contracta to the theoretical velocity
None of these
Area of jet at vena contracta to the area of orifice

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