191. The method of grinding used to produce internal cylindrical holes and tapers, is internal cylindrical grinding form grinding external cylindrical grinding surface grinding ✅ The correct answer is option A.
192. In order to grind soft material coarse grained grinding wheel is used fine grained grinding wheel is used medium grained grinding wheel is used any one of these ✅ The correct answer is option A.
193. In electro-discharge machining, the tool is connected to cathode. Correct Incorrect ✅ The correct answer is option A.
194. In a shaper, the length of stroke is increased by increasing the centre distance of bull gear and crank pin decreasing the centre distance of bull gear and crank pin increasing the length of the arm decreasing the length ✅ The correct answer is option A.
195. The structure of a grinding wheel depends upon hardness of the material being ground nature of the grinding operation finish required all of these ✅ The correct answer is option D.
196. In drilling brass, a drill with zero helix angle is used low helix angle is used high helix angle is used any helix angle can be ✅ The correct answer is option B.
197. A twist drill is specified by its shank, material and diameter shank, lip angle and size of flute material, length of body and helix angle any one of these ✅ The correct answer is option A.
198. The saw milling is an operation of producing grooves around the periphery of a cylindrical or conical workpiece producing narrow slots or grooves on a workpiece reproduction of an outline of a template on a workpiece machining several surf ✅ The correct answer is option B.
199. The tool life __________ as the cutting speed increases. decreases increases ✅ The correct answer is option A.
200. If the cutting speed is increased, then the built-up-edge becomes longer may or may not form becomes smaller and finally does not form at all has nothing to do with ✅ The correct answer is option C.