Download PTU B.Tech 2021 Jan CSE 5th Sem 78325 Computer Graphics Question Paper

Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January CSE 5th Sem 78325 Computer Graphics Previous Question Paper

Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech (CSE) (Sem.?5)
COMPUTER GRAPHICS
Subject Code : BTCS-515-18
M.Code : 78325
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Write briefly :
1)
What is aspect ratio of display devices? What is its importance?
2)
What is the Phong's shading?
3)
What are the limitations of Z-buffer algorithm for hidden surface removal?
4)
Why are transformations required?
5)
What is importance of homogeneous co-ordinates?
6)
What do you mean by viewing?
7)
What are Cartesian and homogeneous coordinate systems?
8)
What is meant by the image resolution and image's aspect ratio?
9)
What do you mean by clipping?
10) Why homogeneous co-ordinates are used in the graphics transformations?
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SECTION-B
11) What is the basic architecture of Cathode ray tube? Discuss in detail the random and
raster scan displays.
12) Write Bresenham's circle drawing algorithm with example.
13) Write the Cohen-Sutherland outcode algorithm.
14) What are properties of light? Explain intuitive color and chromaticity concepts.
15) What are fractals? How are they represented? What are their applications? Explain.
SECTION-C
16) Derive the transformation matrices for the following transformations :
a) Reflection about X-axis.
b) Reflection about Y-axis.
c) Reflection about origin.
d) Reflection about line Y = X.
e) Reflection about line Y = ?X.
17) Explain Z-buffer algorithm in detail.
18) How the 3D images are represented on 2D plane in computer graphics? Explain.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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