Hydraulics and Fluid Mechanics in ME
Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between

Lift and drag
Lift and tangential force
Drag and resultant force
Lift and resultant force

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Hydraulics and Fluid Mechanics in ME
Overall efficiency of a centrifugal pump is the ratio of

Energy supplied to the pump to the energy available at the impeller
Manometric head to the energy supplied by the impeller per kN of water
Energy available at the impeller to the energy supplied to the pump by the prime mover
Actual work-done by the pump to the energy supplied to the pump by the prime mover

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