Hall Ticket No Question Paper Code: BCC001
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
M.Tech I Semester End Examinations (Regular) January/February, 2018
Regulation: IARE-R16
ADVANCED CAD
(CAD/CAM)
Time: 3 Hours Max Marks: 70
Answer ONE Question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
UNIT I
1. The vertices of a triangle are situated at points and Find the coordinates
of the vertices if the triangle is rotated by 300 in counterclockwise direction about its centroid.

Explain the concept of obtaining a reflection about an arbitrary line starting from the reflection
about an axis.

2. Explain Z-buffer algorithm for hidden surface removal.
Differentiate between model coordinate system, working coordinate system and screen coordinate
system.
UNIT II
3. Find the midpoint of a Hermite cubic spline with the two points as and and the tangent
vectors as and
Derive the parametric equation of cubic Bezier curve.
4. Differentiate between C0, C1 andC2 order of continuity for joining two curves.
The coordinates of four points are given by and Find the equation of the
Bezier curve. Also find points on the curve for u=0.25, 0.5, 0.75.
UNIT III
5. Derive the parametric equation of ruled surface.
Explain the boundary conditions of a rectangular surface patch.
6. Differentiate between analytic and synthetic surface.
Describe the different representation schemes of curve.
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UNIT IV
7. Find the equation of the Bezier surface with four control points and
P11(4,2). Also find the surface vectors and its midpoint.
Draw a composite Bezier surface of zero order and first order continuity.
8. Derive the parametric equation of coons surface.
Explain the following surface manipulation.
i. Trimming
ii. Segmentation
UNIT V
9. Differentiate between Boundary representation and Constructive Solid Geometry echniques in
solid modeling.
Draw a detailed sketch of Constructive Solid Geometry tree with suitable example.
10. Explain initial graphics exchange specification (IGES) file structure.
In what way does VRML language benefits collaborative design? Explain.