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Which risk increases when injection molding Reynolds number exceeds limit?

A)Polymer degradation in the feed
B)Turbulent flow marks part surface
C)Increased weld line strength
D)Decreased required resin drying

💡 Explanation

Turbulence increases because exceeding Reynolds number causes transition from laminar to turbulent flow, creating surface defects; therefore the answer is flow marks rather than reduced resin drying, occurring for other reasons.

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