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2003 Course CAD/CAM/CIM

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Total No. of Questions : 12] P1329 [Total No. of Pages :4 [3764] - 181 B.E. (Production Engineering) CAD/CAM/CIM (2003 Course) Time : 3 Hours] [Max. Marks:100 Instructions to the candidates: 1) Attempt one question of each unit form Section - I and Section - II. 2) Answers to the two sections should be written in separate books. 3) Draw neat diagram wherever necessary. 4) Assume suitable data, if required. SECTION - I Unit - I Q1) a) Perform the following transformation if the co-ordinates of the vertices of the pentagon are A(4,1),B(8,1),C(10,4),D(6,7) and E (2,4) Determine the new position of Pentagon for following transformation- Scaling by 2 units in X and Y direction and rotate by 30 anticlockwise about A. [8] b) What are the salient features of half space boundary Representation solid modelling approach. [7] OR Q2) a) b) Explain the different technique for image generation on CRT. [7] Write a 3 X 3 transformation matrix for a line XY with end points X(3,3) and Y(7,7) ,find new co-ordinates of line for following transformation. i) Translate X and Y 2 unit. ii) Scale in X and Y direction by 2 unit. iii) Rotate by 45 degree in CCW. [8] Unit - II Q3) a) b) Write a short note on DNC. [5] Explain with sketch the positioning of tool in CNC-Vertical along with axis representation. [5] P.T.O. c) Write a CNC program in G and M code for a part as shown in fig No.1. Also write a remark for each block [10] OR Q4) a) b) Write a notes on : i) AGV system in FMS, ii) Peterinets. [12] What do you understand by flexible manufacturing systems? Explain the different components in FMS. [8] Unit - III Q5) a) b) In CIM database comprise four classes of data : i) Product data. ii) Manufacturing data. iii) Operational data. iv) Resource data. Explain it. [8] Explain CIM? It s evolution. [7] OR Q6) a) b) Explain following module of MRP-II : i) Capacity requirement. ii) Master Production schedule. [8] Describe various elements of a robotic -system in brief Describe each element in brief. [7] [3764]-181 2 SECTION - II Unit - IV Q7) a) With neat diagram explain the concept solid based curing process of RP. [8] b) Explain with reasons why rapid prototyping is necessary in today s manufacturing era. [7] OR Q8) a) b) Explain with neat sketch selective sintering process of RP. [8] Explain with neat sketch laminated object manufacturing technique of RP. [7] Unit - V Q9) a) Explain the FEA for analysis purpose. [6] b) Explain monocode and ploy code system for coding the parts in GT.[6] c) Consider the following part machine matrix. Apply rank order clustering algorithm to it and identify the part families and machine groups. [8] P1 P2 M2 1 M3 P5 P6 1 1 1 1 1 M4 M5 P4 1 M1 P3 M8 1 1 1 1 1 1 1 1 1 1 1 OR [3764]-181 1 1 M6 M7 P8 1 1 P7 3 Q10)a) A stepped bar is made of two materials joined together as shown in following figure. The bar is subjected to an axial pull of 15KN. Determine the displacement, reaction force at support, stress of each of the section using a ID spar element. [14] A1 = 250 mm2, E1 = 180 GPa A2 = 150 mm2, E2 = 120 GPa. b) Explain why Group technology reduces production time. [6] Unit - VI Q11)a) What is concurrent engineering? Explain the steps in sequential engineering. [7] b) Explain IBM concept of CIM related to Data and work flow integration and Enterprise optimization [8] OR Q12)a) Explain the scope of integration of CIM model of Digital equipment Corporation (DEC). [8] b) Discuss various difficulties encountered in carrying out concurrent engineering. [7] kbkb [3764]-181 4

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