Fluid Mechanics
The energy loss in flow through ven-turimeter is less than that through flow nozzle, because in case of a flow nozzle, the

Length is shorter
Distance between the throat and the inlet is more
Sudden expansion of flow in the downstream occurs
Throat diameter is more

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Fluid Mechanics
Shear stress in a fluid flowing in a round pipe

Remains constant over the cross-section
Is zero at the centre and varies linearly with the radius
Is zero at the wall and increases linearly to the centre
Varies parabolically across the cross-section

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