lower chip-tool contact area and larger shear angle
higher chip-tool contact area and smaller shear angle
lower chip-tool contact area and smaller shear angle
higher chip-tool conta
✅ The correct answer is option A.
Production Engineering MCQs
272. The angle on which the strength of the tool depends is
rake angle
cutting angle
clearance angle
lip angle
✅ The correct answer is option A.
273. Internal or external threads of different pitches can be produced by
pantograph milling machine
profiling machine
planetary milling machine
piano-miller
✅ The correct answer is option C.
274. The usual value of the point angle of a drill is
70°
100°
118°
130°
✅ The correct answer is option C.
275. In down milling, the thickness of chip is
minimum at the beginning of the cut and maximum at the end of the cut
maximum at the beginning of the cut and minimum at the end of the cut
uniform throughout the cut
none of these
✅ The correct answer is option B.
276. Continuous chips with built up edge are formed during machining of
brittle metals
ductile metals
hard metals
soft metals
✅ The correct answer is option B.
277. The material which on machining produces chips with built up edge is
brittle material
tough material
hard material
ductile material
✅ The correct answer is option D.
278. A grinding wheel becomes glazed (i.e. cutting edge takes a glass-like appearance) due to
wear of bond
breaking of abrasive grains
wear of abrasive grains
cracks on grinding whe
✅ The correct answer is option C.
279. The aluminium oxide abrasive is chiefly used for grinding
high speed steel
carbon steel
wrought iron
all of these
✅ The correct answer is option D.
280. Which of the following statement is correct for oblique cutting system?
The cutting edge is inclined at an angle less than 90° with the normal to the velocity of the tool.
Frequently, more than one cutting edges are in action.
The chip flows on the tool face at an angle less than 90° with the normal on the cutting edge.
all of the above
✅ The correct answer is option D.