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Which outcome occurs when excessive cutting speed used?

A)Increased chatter and surface roughness
B)Enhanced workpiece thermal expansion limit
C)Improved high-speed tool steel hardness
D)Decreased cutting-fluid effectiveness rapidly

💡 Explanation

Increased chatter occurs specifically due to self-excited vibration. Because resonance vibration increases during the cutting phase due to frequency matching related to Harmonic oscillation, increased chatter and surface roughness is visible; therefore minimizing damage, rather than enhancing material properties, improves precision.

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