321. Larger than 15° side cutting edge angle
increases tool life
decreases tool life
produces chipping and decreases tool life
results in excessive s
✅ The correct answer is option C.
Production Engineering MCQs
322. The abrasive slurry used in ultra-sonic machining contains fine particles of
aluminium oxide
boron carbide
silicon carbide
any one of these
✅ The correct answer is option D.
323. The high cutting speed and large rake angle of the tool will result in the formation of
continuous chips
discontinuous chip
continuous chips with built up edge
none of these
✅ The correct answer is option A.
324. The cutting force in up milling __________ per tooth movement of the cutter.
is zero
is maximum
decreases from maximum to zero
increases from zero to
✅ The correct answer is option D.
325. The operation performed on a shaper is
machining horizontal surface
machining vertical surface
machining angular surface
all of these
✅ The correct answer is option D.
327. Half nut is used to lock the lathe carriage to the lead screw for thread cutting.
TRUE
FALSE
✅ The correct answer is option A.
328. The lip clearance angle should decrease towards the centre of the drill than at the circumference.
Yes
No
✅ The correct answer is option B.
329. Which of the following operations can be performed with milling cutters?
cutting key ways on shafts
cutting external screw threads
cutting teeth of spur gears
all of these
✅ The correct answer is option D.
330. A taper tap has
its end tapered for about three or four threads
its end tapered for about eight or ten threads
full threads for the whole of its length
none of the above
✅ The correct answer is option B.