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← TechnologyWhich outcome occurs when a lathe's tool post suffers deflection under load?
A)Chatter vibration increases significantly✓
B)Surface finish improves noticeably
C)Cutting forces remain unchanged
D)Tool wear decreases systematically
💡 Explanation
Increased chatter vibration results because deflection allows self-excited oscillations to build during cutting due to a loss of rigidity; therefore surface roughness becomes unacceptable due to resonance, rather than a smoother finish at the set parameters.
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