Production Engineering MCQs

171. The tool life is said to be over if

poor surface finish is obtained
there is sudden increase in cutting forces and power consumption
overheating and fuming due to heat of friction starts
all of the above
✅ The correct answer is option D.

173. The tool may fail due to

cracking at the cutting edge due to thermal stresses
chipping of the cutting edge
plastic deformation of the cutting edge
all of these
✅ The correct answer is option D.

179. The snag grinding is done

to produce good surface finish and high degree of accuracy
to remove considerable amount of metal without regard to accuracy of the finished surface
to grind exterior cylindrical surfaces
any one of the above
✅ The correct answer is option B.
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