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← ScienceWhich outcome occurs when Reynolds number exceeds a laminar threshold in a pump?
A)Complete impeller cavitation and pump stasis
B)Increased pressure drop from frictional losses✓
C)Gross flowrate reduction from fluid shear
D)Optimal fluid conveyance at lowest work
💡 Explanation
Transition to turbulence causes increased pressure drop, using energy due to chaotic eddies; the `turbulent transition` increases dissipation because of energy spreading rather than smooth streamlines, therefore answer B; A and C falsely detail different effects.
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