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← ScienceWhich outcome is promoted due to fluid viscosity during extrusion?
A)Increased pressure drop is observed✓
B)Uniform, high flow rate gained
C)Reduced material boundary cooling
D)Decreased process energy required
💡 Explanation
Increased pressure drop occurs because viscous forces oppose flow. The mechanism is viscous dissipation; energy is consumed overcoming internal friction because the viscosity converts kinetic energy into heat, therefore pressure reduces at extrusion die rather than promoting flow uniformity.
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