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← TechnologyWhich outcome results when chatter vibrations occur during high-speed lathing?
A)Surface finish degrades significantly✓
B)Cutting tool wear decreases
C)Spindle motor efficiency increases
D)Coolant flow rate stabilizes
💡 Explanation
The *dynamic instability*, i.e., chatter, causes self-excited vibrations that negatively affect the workpiece surface finish, because the tool repeatedly impacts the material irregularly. Therefore, the finish is degraded rather than improved; stable cutting conditions ensure a smooth more predictable finish.
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