331. The dressing and truing of grinding wheel are done with the same tools but not for the same purpose.
Agree
Disagree
✅ The correct answer is option A.
Production Engineering MCQs
332. The specific cutting energy used for establishing the machinability of the metal depends upon its
coefficient of friction
microstructure
work hardening characteristics
all of these
✅ The correct answer is option D.
333. When the backgear is engaged in a backgeared headstock, the spindle speed reduces considerably.
Agree
Disagree
✅ The correct answer is option A.
334. The drill spindles are provided with standard taper known as
Morse taper
Seller’s taper
Chapman taper
Brown and Sharpe taper
✅ The correct answer is option A.
335. The rate of removing metal is __________ by increasing the depth of cut.
decreased
increased
✅ The correct answer is option B.
336. Glazing in grinding wheels takes place when the
wheel is too hard or wheel revolves at a very high speed
wheel is too soft or wheel revolves at a very slow speed
wheel is too hard and wheel revolves at very slow speed
wheel is too soft and
✅ The correct answer is option A.
337. Climb milling is chosen while machining because
the chip thickness increase gradually
it enables the cutter to dig in and start the cut
the specific power consumption is reduced
better surface finish
✅ The correct answer is option B.
338. A bottoming 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 C.
339. When the metal is removed by erosion caused by rapidly recurring spark discharges between the tool and work, the process is known as
electro-chemical machining
electro-discharge machining
ultra-sonic machining
none of these
✅ The correct answer is option B.
340. An open structure of a grinding wheel is used for
soft materials
tough materials
ductile materials
all of these
✅ The correct answer is option D.