241. In electro-discharge machining, dielectric is used to
help in the movement of the sparks
control the spark discharges
act as coolant
all of these
✅ The correct answer is option D.
Production Engineering MCQs
242. The cutting speed is zero at the periphery and it is maximum at the centre of the drill.
Yes
No
✅ The correct answer is option B.
243. The size of a shaper is given by
stroke length
motor power
mass of machine
rate size
✅ The correct answer is option A.
244. The swing diameter over the bed is __________ the height of the centre measured from the bed of the lathe.
equal to
twice
thrice
one-half
✅ The correct answer is option B.
245. The operation of producing grooves around the periphery of a cylindrical or conical workpiece is called
profile milling
gang milling
saw milling
helical milling
✅ The correct answer is option D.
246. The operation of reproduction of an outline of a template on a workpiece is called face milling.
Yes
No
✅ The correct answer is option B.
247. The cutting speed of a drill varies from point to point on the cutting edge of the drill.
Correct
Incorrect
✅ The correct answer is option A.
248. The rear teeth of a broach
perform burnishing operation
remove minimum metal
remove maximum metal
remove no metal
✅ The correct answer is option C.
249. In which of the following machine, the work is usually rotated while the drill is fed into work?
Sensitive drilling machine
Radial drilling machine
Gang drilling machine
Deep hole drilling mac
✅ The correct answer is option D.
250. In twist fluted drills, chips do not move out automatically.
Correct
Incorrect
✅ The correct answer is option B.