Hydraulics and Fluid Mechanics in ME
The flow in a pipe or channel is said to be non-uniform when

The liquid particles at different sections have different velocities
The liquid particles at all sections have the same velocities
Each liquid particle has a definite path
The quantity of liquid flowing per second is constant

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

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

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