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CAD/CAM & Automation (October 2009)

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Total No. of Questions : 12] P1118 [Total No. of Pages : 4 [3664]-132 B.E. (Mechanical and Mechanical S/W) CAD/CAM AND AUTOMATION Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answers to the two sections should be written in separate books. 2) Neat diagrams must be drawn wherever necessary. 3) Figures to the right indicate full marks. 4) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 5) Assume suitable data, if necessary. 6) All questions are compulsory. SECTION - I Q1) a) Find the co-ordinates of triangle ABC with vertices A(3, 3), B(9, 3) and C(3, 7) when it is scaled by Sx = 2 and Sy = 2 about point P(5, 4). [6] b) What do you understand by Mapping of Geometric Model ? [5] c) Write a short note on Inverse Transformation. [5] OR Q2) a) A triangle PQR represented as P(14, 15), Q(66, 15) and R(40, 60). It is mirrored about line y = 30. Determine the new coordinates of the triangle. [6] b) Write a short note on transformation matrix for perspective projections. [5] c) Determine the concatenated transformation matrix for reflecting any entity about any given line. [5] Q3) a) Formulate the equation and end point of a line which passes through a point P1 and is trimmed by a point Pt as shown in the fig. The line is to be parallel to an existing line passing through points P3 and P4. [8] P.T.O.

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Additional Info : 2003 Course
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