ANNA UNIVERSITY-CHENNAI
REGULATION 2013
ME6501-COMPUTER AIDED DESIGN
TWO MARKS QUESTIONS WITH ANSWERS
UNIT-3
1.What is the need of visualization?
Visualization in geometric modeling is helpful in finding connection in the design applications. By shading the parts with various shadows, colors and transparency, the designer can recognize undesired unknown interferences. In the design of complex surfaces shading with different texture characteristics can use to find any undesired quick modifications in surface changes.
Visualization in geometric modeling is helpful in finding connection in the design applications. By shading the parts with various shadows, colors and transparency, the designer can recognize undesired unknown interferences. In the design of complex surfaces shading with different texture characteristics can use to find any undesired quick modifications in surface changes.
2.What is hidden solid removal?
The hidden solid removal problem involves the view of solid models with hidden line or surface eliminated. Available hidden line algorithm and hidden surface algorithms are useable to hidden solid elimination of B-rep models.
The hidden solid removal problem involves the view of solid models with hidden line or surface eliminated. Available hidden line algorithm and hidden surface algorithms are useable to hidden solid elimination of B-rep models.
3.What is powder shading?
Powder shading is a sketching shading method. In this style, the stumping powder and paper stumps are used to draw a picture. This can be in color. The stumping powder is smooth and doesn't have any shiny particles. The poster created with powder shading looks more beautiful than the original. The paper to be used should have small grains on it so that the powder remains on the paper.
Powder shading is a sketching shading method. In this style, the stumping powder and paper stumps are used to draw a picture. This can be in color. The stumping powder is smooth and doesn't have any shiny particles. The poster created with powder shading looks more beautiful than the original. The paper to be used should have small grains on it so that the powder remains on the paper.
4.Mention the advantages and limitations of ray tracking algorithm.
Advantages of Ray tracing:
1. A realistic simulation of lighting over other rendering.
2. An effect such as reflections and shadows is easy and effective.
3. Simple to implement yet yielding impressive visual results.
Advantages of Ray tracing:
1. A realistic simulation of lighting over other rendering.
2. An effect such as reflections and shadows is easy and effective.
3. Simple to implement yet yielding impressive visual results.
Limitation of ray tracing:
Scan line algorithms use data consistency to divide computations between pixels, while ray
tracing normally begins the process a new, treating every eye ray separately.
Scan line algorithms use data consistency to divide computations between pixels, while ray
tracing normally begins the process a new, treating every eye ray separately.
5.What is hidden line removal?
Hidden line removal (HLR) is the method of computing which edges are not hidden by the faces of parts for a specified view and the display of parts in the projection of a model into a 2D plane.
Hidden line removal (HLR) is the method of computing which edges are not hidden by the faces of parts for a specified view and the display of parts in the projection of a model into a 2D plane.
6.What is hidden solid removal?
The hidden solid removal problem involves the view of solid models with hidden line or surface eliminated. Available hidden line algorithm and hidden surface algorithms are use able to hidden solid elimination of B-rep models.
The hidden solid removal problem involves the view of solid models with hidden line or surface eliminated. Available hidden line algorithm and hidden surface algorithms are use able to hidden solid elimination of B-rep models.
7.List out the various visualization approaches.
Parallel projections
Perspective projection.
Hidden line removal
Hidden surface removal
Hidden solid removal
Shaded models
8.Mention any two surface removal algorithm.
1. Z - buffer algorithm
2. Painters algorithm
Click here Unit II 2 marks and Answers
Click here Unit IV 2 marks and Answers
Click here Unit V 2 marks and Answers
For all units of CAD and other mechanical engineering subjects study materials is uploaded see right side of the page you can download whatever materials you need to study or copy and paste the following link :annaunivstudymaterials.blogspot.com
1. Z - buffer algorithm
2. Painters algorithm
Click : DME Unit 2 Question Bank
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Click here Unit I 2 marks and AnswersClick: DME Unit 3 Question bank
Click: DME Unit 4 Question Bank
Click: DME Unit 5 Question Bank
Click here Unit II 2 marks and Answers
Click here Unit IV 2 marks and Answers
Click here Unit V 2 marks and Answers
For all units of CAD and other mechanical engineering subjects study materials is uploaded see right side of the page you can download whatever materials you need to study or copy and paste the following link :annaunivstudymaterials.blogspot.com
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