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2003 Course Die & Mould Design (Elective I)

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Total No. of Questions : 12] P1335 [Total No. of Pages : 4 [3764]-195 B.E. (Production S/W) DIE AND MOULD DESIGN (411122) (2003 Course) (Elective - I) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) From Section-I solve Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, and from SectionII solve Q.7 or Q.8, Q.9 or Q.10, Q.11 or Q.12. 2) Answers to the two sections should be written in separate answer book. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of electronic pocket calculator is allowed. 6) Assume suitable data, if necessary. SECTION - I UNIT - I Q1) a) Explain briefly the theories of plastic yielding. b) Explain defects their causes and remedies in rolling. [8] [8] OR Q2) a) Explain the following. i) CCD. ii) [8] Shape Factor. iii) Porthole dies. iv) Hooker s Process. b) Derive the equation for drawing stress developed during operation.[8] UNIT - II Q3) a) What is OBI? Explain its working with merits and demerits. [8] b) How presses are classified on the basis of frame? Explain with neat sketch. [8] P.T.O.

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