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← ScienceWhich risk increases when a fluid pump exceeds critical Reynolds number?
A)Laminar flow becomes more stable
B)Head pressure is more consistent
C)Net Positive Suction Head decreases
D)Cavitation erosion becomes more likely✓
💡 Explanation
Increasing Reynolds number means turbulent flow occurs where boundary layer separation produces low-pressure zones; this encourages the phase transition from liquid to vapor called cavitation, because the local pressure falls below saturation, therefore erosion increases due pressure implosion rather than a different flow profile.
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