Question

Which pair of following statements correct for temperature in metal cutting?

P. Cutting temperature increases with increasing specific heat of workpiece material.

Q. Cutting temperature decreases with increasing specific heat of workpiece material.

R. Cutting temperature decreases with increasing thermal conductivity of workpiece material.

S. Cutting temperature increases with increasing thermal conductivity of workpiece material.

• A. P and R
• B. P and S
• C. Q and R
• D. Q and S

Answer 1

The correct option is C Q and R

• If specific heat of workpiece is increased, it will be able to absorb more heat.
• If thermal conductivity of workpiece is increased, it will dissipate heat at higher rate.