# PSC HELPER

Public Service Commission Preparation & Blogging

Practical Guides

Practice Sets

Tips & Tricks

Practical Guides

Practice Sets

Tips & Tricks

Practical Guides

Practice Sets

Tips & Tricks

Practical Guides

Practice Sets

Tips & Tricks

MCQ Sets

MCQ Sets

MCQ Sets

MCQ Sets

MCQ Sets

MCQ Sets

MCQ Sets

## Interviews Preparations

### Tips & Tricks

Based on Experience

Modal Sets

Modal Sets

Modal Sets

Modal Sets

Modal Sets

Tutorials

Tutorials

Tutorials

Tutorials

Tutorials

Tutorials

## Blogging & Wordpress Tutorials, Courses

Tips

Tips

New Strategies

New Strategies

Make Money

Make money

Guide

Guide

For Beginners

For Beginners

Tutorials

Tutorials

How to start?

How to start?

Intermediate

### Wordpress

Intermediate

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Tribhuvan University
Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  Institute of Science and Technology 2067
Bachelor Level/Second Year/Fourth Semester/ScienceÂ  Â  Â  Â  Â  Â  Â  Â Â  Â  Â Â  Â  Full Marks:80
Computer Science and Information Technology(CSc.254 ) Â  Â  Â  Â  Â  Â Â Â Â Â  Pass Marks:32 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  (Computer Graphics)Â Â Â Â Â Â Â  Â  Â  Â Â  Time: 3 hoursÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
Candidates are required toÂ  give their answer in their own wordsÂ  as far as practicable.
All questions carry equal marks.Â
Attempt all the questions.
1.What is a random scan display system? Draw it's block diagram and explain it in detil.
2. What do you mean by homogenous co-ordinate? Explain it with equation and practical application.
3. Explain the following terms with practical applicatios.
Â  Â  Â  Â  Â  Â  Â  Â (a)Â  Â  Â Â 3D Mirror
Â  Â  Â  Â  Â  Â  Â  Â (b)Â  Â  Â  Â 2D Rotation
4. Explain in about circle clipping algorithm. Where do you require circle clipping algorithm?
5. How can you draw circle? Explain with algorithm.
6.Â  Explain in detail about polygon table. How can you apply in the case of computer animation?
7.Â  What is the polygon mesh? Explain the application of polygon mesh with example.
8.Â Â  Justify that hidden surface removal is required in computer graphics. Explain in detail about depthÂ
Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â buffer method.
Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  Â  Â  Â  Â  Â  Â Â  Â  Or
Â  Â  Â  Â  Â  Â  Â  Â  Explain in detail about scan method. Justify thatÂ  it is better than depth buffer method.
9.Â  Consider 256 pixel *512 scan lines image with 245-bits true color. If 20 minutes video is required Â  Â Â
Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â toÂ capture, calculate the total memory required? What is the color intensity model?