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Old May 27th, 2014, 11:15 AM
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Default IETE DIPIETE-CS (New Scheme)- Computer Graphics previous year's question papers

Will you please give me the IGNOU M.Sc in Dietetics and food service management Applied Physiology previous years question papers?
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Old May 27th, 2014, 04:53 PM
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Default Re: IETE DIPIETE-CS (New Scheme)- Computer Graphics previous year's question papers

As you want to get the IETE DIPIETE-CS (New Scheme)- Computer Graphics previous year's question papers so here is the information of the same for you:

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Q.1 Choose the correct or the best alternative in the following: (210)
a. Compression technique used in JPEG is
(A) Loss less compression (B) Lossy compression
(C) Normally lossless (D) Generally lossy
b. Which of the following is not a digital video format?
(A) Ogg Theora (B) JPEG 2007
(C) MPEG (D) WMV
c. Parametric representation of a line with end point is (2, 4) and (6, -7) and
parameter t where 0 t 1, is given by
(A) (2 + 4t, 4 – 11t) (B) (2 – 4t, 4 + 11t)
(C) (2 + 6t, 4 – 7t) (D) (4t, – 7t)
d. If a point (3, 6) is translated using value 3 tx
−and 7 t y
, then the new point
is
(A) (6, 1) (B) (6, 13)
(C) (0, 13) (D) (0, 1)
e. Isometric projection is a type of ________________ projections.
(A) Axonometric (B) Parallel
(C) Orthographic (D) All of these
f. Which of the following is true in context of clipping?
(A) It stores only displayable part of object in memory frame.
(B) It stores complete object but displays only that part that fits in the view port.
(C) It initially stores complete object but once clipped, it discards the non- viewable part from memory.
(D) Both (A) and (C) are true as per the availability of memory.

g. In the refresh process of an image on a raster terminal, which of the following
statement is true:
(A) The refresh memory stores the value of each pixel; therefore the refresh time
is constant.
(B) The raster terminals do not require refresh the image because it is stored in
its memory.
(C) The refresh memory (raster) stores the sequence of commands to redraw
complete image.
(D) The required time to refresh an image depends on the complexity of the
scene to be rendered.
h. Which of the following processes is NOT part of the 2D transformation?
(A) Clipping (B) Translation
(C) Scaling (D) Rotation
i. Which of the following is not an input device?
(A) Light pen (B) Optical mouse
(C) Digitizer (D) None of the above
j. ___________ uses set operations to model solid objects.
(A) Swept solids (B) Cubic splines
(C) CSG models (D) Cubic Bezier curves
Answer any FIVE Questions out of EIGHT Questions.
Each question carries 16 marks.
Q.2 a. Write a short note on Interactive Graphics Systems. (8)
b. Define Graphics software. Differentiate between general programming package
and special purpose application package. (8)
Q.3 a. Write Line Drawing algorithm to draw a line between points (a, b) and (c, d).
(8)
b. Explain Flood Fill algorithm for polygon filling with a suitable example. (8)
Q.4 a. Find reflections of point (3, 4) with respect to x-axis and y-axis separately. Also
find the corresponding transformation matrices. (8)
b. Determine sequence of basic transformations that are equivalent to the rotation
of a point (x, y) around (1, 3) by an angle . (8)
DC66 / JUNE – 2011 3 DipIETE – CS (NEW SCHEME)
Q.5 a. Clip a line segment between points (1, 3) to (5, 17) using Cohen Sutherland
clipping algorithm so that it fits into view port with left bottom at (2, 5) and
right top at (5, 12). (8)
b. Differentiate between window and view port. What technique do we use to see
large size graph on a comparatively smaller screen? (8)
Q.6 a. Find a rotation matrix to rotate the point (1, 2, 3) by
o
45 around origin in XY
plane. Find transformed value of the point also. (8)
b. What is orthographic projection? Explain the term isometric, oblique and
perspective projection. (8)
Q.7 a. Describe depth-buffer or z-buffer method for detecting visible surfaces. (8)
b. Write a short note on Back Face Detection method. (8)
Q.8 a. Describe in brief the steps required to produce real time animation. (8)
b. Define the term morphing and explain its use in key frame systems of
animation. (8)
Q.9 a. What are various applications of multimedia? Why do they require a high end
PC? (8)
b. Explain briefly the use of audio and visual elements in multimedia. (8)


DC66 / DEC. – 2011 1 DipIETE – CS (NEW SCHEME)
ROLL NO. ___________________
DipIETE – CS (NEW SCHEME) – Code: DC66
Subject: COMPUTER GRAPHICS
Time: 3 Hours Max. Marks: 100
NOTE: There are 9 Questions in all.
• Please write your Roll No. at the space provided on each page immediately after
receiving the Question Paper.
• Question 1 is compulsory and carries 20 marks. Answer to Q.1 must be written in
the space provided for it in the answer book supplied and nowhere else.
• The answer sheet for the Q.1 will be collected by the invigilator after 45 Minutes of
the commencement of the examination.
• Out of the remaining EIGHT Questions answer any FIVE Questions. Each question
carries 16 marks.
• Any required data not explicitly given, may be suitably assumed and stated.
Q.1 Choose the correct or the best alternative in the following: (2×10)
a. By generating only ____ of a circle, the rest of the points of the circle can be
generated using symmetry
(A) 3 quadrants (B) 2 quadrants
(C) 1 quadrants (D) All the 4 quadrants have to be generated
b. Time between two consecutive refreshes of CRT depend upon
(A) Size of graphics image (B) Size of Screen
(C) Frame buffer size (D) Persistence factor of phosphor
c. In a screen with aspect ratio of 4:3, if 1280 pixels are along horizontal line then
number of pixels along vertical line is
(A) 960 (B) 800
(C) 1020 (D) 980
d. If a point (3, 6) is translated using value tx = 3 and ty = –7, then the new point is
(A) (6, -1) (B) (6, 13)
(C) (0, 13) (D) (0, 1)
e. Which of the following is a type of projection?
(A) Trimetric (B) Isometric
(C) Diametric (D) Tetrametric
f. Which of the following region code is not valid in Cohen Sutherland clipping
algorithm?
(A) 1010 (B) 0000
(C) 1001 (D) 1111
DECEMBER 2011
DC66 / DEC. – 2011 2 DipIETE – CS (NEW SCHEME)
ROLL NO. ___________________
g. Which of the following format is used for storing images only?
(A) PCX (B) MP3
(C) AVI (D) WM V
h. Shearing in computer graphics is a type of
(A) Projection (B) Transformation
(C) Shading (D) Clipping
i. Which of the following is not an input device?
(A) Light pen (B) Optical mouse
(C) Digitizer (D) None of the above
j. The following algorithm is not used for removal of hidden surface
(A) Back Face removal Algorithm (B) Z-Buffer Algorithm
(C) Cyrus Beck Algorithm (D) Depth Buffer Algorithm
Answer any FIVE Questions out of EIGHT Questions.
Each question carries 16 marks.
Q.2 a. Write a short notes on video adapter/controller. (8)
b. Explain the components of graphic systems configuration with the help of a
diagram. (8)
Q.3 a. Find the points to be selected to draw a line using DDA algorithm between
points (3, 5) and (10, 10). (8)
b. Explain Seed Fill algorithm for polygon filling with a suitable example. (8)
Q.4 a. Compute the transformation matrix required to translate a point (x,y) by distance
3 and 4 along x and y axis respectively and then rotate (x,y) anti clockwise by
45 o . (8)
b. Explain the concept of homogeneous coordinate system and its application. (8)
Q.5 a. Clip a line segment between points (1,3) to (5,17) using Cohen Sutherland
clipping algorithm so that it fit into view port with left bottom at (3,5) and right
top at (8,12). (8)
b. Explain the steps required in viewing transformation to map world coordinate
scene to device coordinates. (8)
DC66 / DEC. – 2011 3 DipIETE – CS (NEW SCHEME)
ROLL NO. ___________________
Q.6 a. Find a rotation matrix to rotate the point (1,2,3) by 45
o around origin in y-z
plane. Find transformed value of the point also. (8)
b. Define oblique projection and then find the transformation matrix for the
projection of a point (x, y, z) in x-y plane. (8)
Q.7 a. Describe a technique used to draw only visible portion of an image. What
factors are considered while selecting the visible portion of an image? (8)
b. Describe the algorithm for hidden line removal. (8)
Q.8 a. What are the devices required for producing animation? Describe in brief the
steps required to produce real time animation. (8)
b. Define the term morphing and explain its use in key frame systems of
animation. (8)
Q.9 Write short notes on the following:
(i) MPC specification
(ii) BMP file format
(iii) WAV file format
(iv) Compact Disk (4×4)


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