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2003 Course CAD/CAM & Automation

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Total No. of Questions : 12] P1038 [Total No. of Pages : 4 [3864]-141 B.E. (Mechanical & Mech. S/W) CAD/CAM AND AUTOMATION (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) A triangle PQR with vertices P(0, 0), Q(4, 0), and R(2, 3) is to be subjected [6] to following two transformation in order : 1. Translation through 4 and 2 units along X and Y direction; and 2. Rotation through 90o about the new position of point R. Determine : i) ii) The concatenated transformation matrix. The new position of triangle. b) Write a short note on Inverse Transformation. [5] c) Determine the concatenated transformation matrix for rotating any entity about any given point. [5] OR Q2) a) Explain translational and rotational mapping with suitable examples. [6] b) Derive a concatenated transformation matrix to reflect a point about a line y = mx + c. [10] Q3) a) Describe the procedure to find the center of a circle that is tangent to two known lines with a given radius. [8] b) How surface modeling different from wireframe and solid modeling? Explain briefly with example. [4] c) Give some practical applications of solid modeling. [4] P.T.O.

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