Wednesday, October 7, 2009

V Sem ME 1308 -things to learn

Computer aided machine drawing practice -Things to learn
In design data book(psg)
Welding symbols(pg.no 11.1,11.2)
1.fillet
2. square butt
3.double butt
4.Spot welding
5.representation of welding symbols
Bolt and nut(for sizes M10,M12,M16)(5.47,48,49)
Screw(5.51)
Stud(5.64)
V block for holding a circular job of diameter 83 mm(5.97)
Types of rivet for diameter of 10mm(5.26)
a.snap
b.pan
c.flat head
taper key &hub for a shaft diameter of 58-65 mm(5.21)
only assembled fv,tv,sv will be asked

Sunday, October 4, 2009

Computer Aided Machine drawing Practice ME 1308 Viva questions

Computer Aided Machine drawing Practice ME 1308 Viva questions

1. What is the purpose of plummer block?
2. What is the purpose of layer command in autocad?
3. What is the purpose of coupling? What are the types?
4. How is the bolt specified? List some of the types of the threads.
5. What are the types of sectioning in the drawing?
6. What are the general guidelines to be followed during dimensioning?
7. What is the difference between first angle Projection and third angle projection?
8. Give symbols for welding on both sides ?
9. What is meant by GD & T ?
10. What are the differences between limits , fits and tolerances ?
11. What are the different methods of dimensioning ?
12. What is LISP ?
13. What is the difference between a window and crossing selection box?
14. What are some of the advantages of using blocks?
15. What is the difference between snap and osnap? When would you use snap?
16. What is polar?
17. What is the difference between redraw and regen?
18. What is the purpose of the command QTEXT ?
19. How can you draw isometric view drawings in 2D ?
20. Where is the explode command used?
21. What is xref ?
22. Exand the abbreviations BIS, ISO ?
23. What are the sizes of the sheets A4,A3,A2,A1 ?
24. How is the dimension style altered ?
25. How can a autocad drawing saved in jpeg or bmp format?