Jawaharlal Nehru Technological University Kakinada 2010-2nd Sem M.Tech CAD / CAM Supplementary s Computer Aided & Manufacturing (CAD/CAM) - Question Paper

Subject Code: B0401
M.Tech II Semester Supplementary exams June 2010
Computer Aided & Manufacturing
(CAD/CAM)
Time: three Hours Max Marks: 60
ans any 5 ques. All ques. carry EQUAL marks
1. (a) provide the advantages and disadvantages of Numerical Control of machine tool.
(b) Differentiate among the terms NC , CNC and DNC
2. (a) elaborate the advantages of computer aided part programming over manual part
Programming.
(b) elaborate the different ways by which a Line and a Circle may be described in APT?
3. (a)What is canned cycle ? discuss with example.
(b) define with the aid of examples the use of absolute, incremental and mixed
Methods of coordinate data
4. (a) define briefly the different Sensors used in CNC machine tools.
(b) What do you mean by adoptive control ? discuss
5. (a) Why is a Recirculating ball screw and nut is used universally in CNC machine
Tools?
(b) elaborate various areas where design modifications are needed in CNC machine
Tools from their counter parts?
6 (a) elaborate the applications where the Numerical Control is most suitable?
(b) elaborate the major components of NC Machine system? Briefly define the .
functions of every.
7. (a) What is the need of Group Classification ? discuss various approaches of Group
classification production system to Group Technology system ?
8. (a) discuss the terms Parts family and Machine cell
(b) elaborate the benefits of Group Technology?

Earning:   Approval pending.