Multiple choice

Better surface finish is obtained with a large rake angle because

  1. the area of shear plane decreases resulting in the decrease in shear force and cutting force

  2. the tool becomes thinner and the cutting force is reduced

  3. less heat is accumulated in the cutting zone

  4. the friction between the chip and the tool is less
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Large positive side rake angle result in less chip formation, less cutting force, good surface finish because increase in rake angle results in decrease the area of shear plane that result decrease in shear force.

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