Exercise: Production Engineering

Questions for: Production Engineering

The machining of titanium is difficult due to
A:
high thermal conductivity of titanium
B:
chemical reaction between tool and work
C:
low tool-chip contact area
D:
none of these
Answer: C
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In up milling, the thickness of chip is
A:
minimum at the beginning of the cut and maximum at the end of the cut
B:
maximum at the beginning of the cut and minimum at the end of the cut
C:
uniform throughout the cut
D:
none of these
Answer: A
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In the relation VTn = C, the value of n for carbide tools is
A:
0.1 to 0.2
B:
0.20 to 0.25
C:
0.25 to 0.40
D:
0.40 to 0.55
Answer: B
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Which of the following statement is incorrect with reference of lathe cutting tools?
A:
The flank of the tool is the surface or surfaces below and adjacent to the cutting edges
B:
The nose is the corner, arc or chamfer joining the side cutting and the end cutting edges
C:
The heel is that part of the tool which is shaped to produce the cutting edges and face
D:
The base is that surface of the shank which bears against the support and takes tangent pressure of the cut
Answer: C
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The correct sequence of tool materials in increasing order of their ability to retain their hot hardness is
A:
carbide, ceramic, cermet, borazon
B:
ceramic, carbide, borazon, cermet
C:
cermet, carbide, ceramic, borazon
D:
borazon, ceramic, carbide, cermet
Answer: C
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