STUPIDSID
1 (a)
Briefly explain the different types of chips produced during metal cutting with neat sketches.
6 M
1 (b)
In an orthogonal cutting operation, following data have been observed. Uncut chip thickness=0.127 mm; Width of cut=6.14 mm; Cutting speed=2.6 m/sec; Rake angle=20° Cutting force=589N; Thrust force=225N; Chip thickness=0.226 mm. Determine shear angle, friction angle and chip velocity.
8 M
1 (c)
With a neat sketch, explain crater wear and flank wear.
6 M
2 (a)
List the described properties of cutting tool materials and explain any four.
10 M
2 (b)
List the techniques to measure tool-tip temperature and explain tool work thermocouple technique with a neat sketch.
10 M
3 (a)
With a neat sketch, explain the constructional features of a Capstan lathe.
10 M
3 (b)
Explain hydraulic driving mechanism of a shaper with a neat sketch.
10 M
4 (a)
With a neat sketch, explain the constructional features of a radial drilling machine tool.
8 M
4 (b)
With neat sketches, explain the following operations:
i) Drilling
ii) Boring
iii) Counter sinking
iv) Trepanning
i) Drilling
ii) Boring
iii) Counter sinking
iv) Trepanning
8 M
4 (c)
Write a note on CNC machines.
4 M
5 (a)
With a neat sketch, explain the constructional features of horizontal spindle column and knee milling machine.
8 M
5 (b)
Differentiate up milling and down milling with a neat sketch.
6 M
5 (c)
List the methods of indexing and explain any one.
6 M
6 (a)
Explain the types of abrasives used in grinding wheel.
4 M
6 (b)
With a neat sketch, explain the constructional features of a centreless grinding machine.
8 M
6 (c)
Explain the factors to be considered while selecting a grinding wheel.
8 M
7 (a)
What are the advantages and limitations of broaching process?
8 M
7 (b)
Explain the principle of lapping with a neat sketch.
6 M
7 (c)
Explain the principle of honing with a neat sketch.
6 M
8 (a)
Explain laser beam machining with a neat sketch.
10 M
8 (b)
Explain ultrasonic machine with a neat sketch.
10 M
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