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← ScienceWhich consequence occurs when exceeding a pump's onset-of-turbulence threshold?
A)Increased head loss in the impeller✓
B)Reduced net positive suction head
C)Elevated fluid kinematic viscosity locally
D)Decreased pump motor power consumption
💡 Explanation
Increased head loss results because energy dissipation sharply rises during turbulent flow created via direct transition; The Reynolds number exceeds the threshold, triggering fully developed turbulence; therefore it isn't B,C and D, rather than smooth flow causing reduced efficiency.
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