12. To increase the tool life in machining a. increase the depth of cut b. incre
ID: 1867745 • Letter: 1
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12. To increase the tool life in machining a. increase the depth of cut b. increase the rake angle of the tool c. use cutting fluid d. reduce the clearance angle 13. In flat rolling, the maximum possible draft mainly depends on a. b. c. d. sheet material and initial thickness roll size and roll material coefficient of friction and roll gap location of neutral point The diagram shows the following machine a. b. c. d. 14. lathe machine horizontal milling machine vertical milling machine shaper machine than threads produced by thread rolling. a. TRUE b. FALSE 16. Select the grain flow pattern of the threads that are produced by rolling b. a. 17. Units of feed in milling is a.) mm/rev b. rev/min c. tooth/rev d. mm/toothExplanation / Answer
12: Increasing the Rake Angle reduces the cutting force and the cutting temperature resulting in increased tool life. However, for large rake angle, tool edge is weakened resulting in increased wear due to chipping of the cutting edge.
(b) and (d) and (c) are the correct answer
13: In a rolling process, the maximum possible draft, defined as the difference between the initial and the final thickness of the metal shee
so option (a) and (c)
14: it is the lathe machine
(a)
15: false
becoz thread produced by thread rollin are stronger then maching process becoz it is the cold thread forming process
16 (b) becoz in rolling there is bending of grains
17: (a)
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