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← ScienceWhich consequence results when a laminar flow's Reynolds number surpasses a pump system's critical value?
A)Onset of turbulent flow occurs✓
B)Fluid viscosity linearly decreases
C)Pump efficiency progressively improves
D)System pressure drop stabilizes
💡 Explanation
The onset of turbulent flow occurs because, at this threshold, inertial forces dominate over stabilizing viscous forces; the **Reynolds number** indicates the ratio of these forces. Therefore transition to turbulence is marked rather than increasing viscosity as viscosity is not directly Reynolds number limited in these circumstances.
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