3D CAD Modeling Answers

Explain Warnock’s algorithm for hidden surface removal with an example

Explain the Scan line coherence algorithm with an example

Reflection Question: If you had to create a countersink hole using only Revolve and Extrude, what would the modeling process look like? Do you agree that the Hole feature simplifies the hole creation process? Why?

1) Identify and draw any rectangular object in third orthographic angle projection.

2) Explain in detail the steps followed in question 1?

1.identify and draw any rectangular object in third orthographic angle projection.

2.explain in detail the steps followed in question 1.

3.draw a bridge from a two point perspective sharing.

4.explain the steps that needed to be followed when constructing a two point perspective.

How series dimensioning can be done in engineering drawing? Mention any two methods and describe with the help  of examples.

1. A line CD 90 long is parallel to both HP and VP. The line is 45 in front of the VP and 60

above the HP. Draw the projections of the line.

2. A 90 long line is parallel to and 25 in front of the VP. Its one end is in the HP. While the other

is 50 above the HP. Draw its projections and find its inclination with the HP.

3. The top view of a 75 long line measures 55. The line is in the VP, its one end being 25 above

the HP. Draw its projections.

4. A line AB, 100 long, is inclined at 300

to the HP and 450

to the VP. The point A is 15 above

HP and 20 in front of VP. Draw its projections and locate its traces.

5. The distance between projectors of two points A and B is 70. Point A is 10 above HP & 15 in

front of VP. B is 50 above HP & 40 in front of VP. Find the shortest distance between A and B

and true inclinations.

Develop the lateral surface of a hexagonal prism of base edge 20mm and axis height of 50mm resting

on its base on HP such that its one base edge is parallel to VP

A cube of edge 24mm is resting on the top of a frustum of cone of base diameter 60mm and top

diameter of 40mm with axis height of 72mm. Draw the isometric view of these solids?

How could you produce the same offset hexagonal sketch elements using a circular pattern?