Hydraulics and Fluid Mechanics in ME
When an ideal fluid flows past a sphere

lowest pressure intensity occurs at front stagnation point
total drag is zero
lowest pressure intensity occurs at rear stagnation point
highest intensity of pressure occurs around the circumference at right angles to flow

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Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of a reaction turbine, is the ratio of

None of these
Actual work available at the turbine to energy imparted to the wheel
Power produced by the turbine to the energy actually supplied by the turbine
Work-done on the wheel to the energy (or head of water) actually supplied to the turbine

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