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Posted By: kondapalli Member Level: Gold Posted Date: 08 May 2008
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2007 Jawaharlal Nehru Technological University B.Tech Mechanical PRODUCTION TECHNOLOGY setno1 Question paper
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1. (a) What are the different pattern allowances? Explain their in detail.
(b) Give an account of different pattern materials? [8+8]
2. (a) State the differences between true-centrifugal casting, semi-centrifugal casting,
centrifuging. Which method is used for cast iron pipe production.
(b) Discuss the various elements that comprise the gating system. [8+8]
3. (a) How the work piece is prepared for gas welding? Explain them with neat
sketches?
(b) Explain various welding positions? [8+8]
4. (a) Briefly explain “Butt-welding” and “seam welding”?
(b) With the help of a neat sketch explain the principle of Spot welding? [8+8]
5. (a) Explain the term Brazing and different methods used in Brazing.
(b) Explain the following terms used in computation of weld costs
i. Operator factor
ii. Overhead costs
iii. Equipment costs. [10+6]
6. (a) Explain the recrystallization process in detail.
(b) Explain the features of grain growth on metals. [8+8]
7. (a) Discuss the basic characteristics of extrusion process.
(b) Discuss the following with the help of neat sketches
i. Hydrostatic Extrusion
ii. Impact Extrusion [6+10]
8. (a) Sketch and show the difference between hand hammers and sledge hammers.
(b) Discuss the advantages and limitations of cold forging. [8+8]
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