B.Sc. (E.C.S.) II (Semester IV) (New CBCS) Examination, 2018
Paper IV computer graphics
Day and Date Tuesday, 11-12-2018 Total Marks 70
Time 10.30 a.m. to 1.00 p.m.
Instructions All questions are compulsory.
All questions carry equal marks.
1. Choose the correct alternative. 14
The refresh buffer is not used in
raster scan display system random scan display system
thin CRT DVST
The point about which an object is rotated is called
Fixed point Central point
Pivot point None
Which device is suitable to input a series of coordinate positions
Locator Stroke
Valuator String
The phenomenon of having a continuous glow of a beam on the screen
even after it is removed is called as
Fluorescence Persistence
Phosphorescence Incandescence
Which of the following is not a rigid body transformation
Translation Rotation Shearing Reflection
Which technique of color CRT is used for production of realistic image
Beam penetration Shadow mask
Both and None of above
If a point is reflected about an axis which is normal to the XY plane
and passing through the origin, the reflected point is

Reflection of a point about x-axis, followed by a counter-clockwise rotation
of 90 degree, is equivalent to reflection about the line
x y x 0
x y x y 1
The translation distances dy) is called as
Translation vector Shift vector
Both a and b Neither a nor b
10) The basic geometric structure that describes a scene on display is called

Attributes Output primitive
Lines Curves
11) The simplest output primitive is
Straight line Straight line segment
Point Circle
12) The quality of an image depends on
No. of pixel used by image
No. of line used by image
No. of resolution used by image
None
13) The technique used to summarize the financial, statistical, mathematical,
scientific and economic data is
Computer Art Image processing
Presentation Graphics None of the above
14) Aspect ratio is
The ratio of image's width to its height
The ratio of window to viewport height
The ratio of image's intensity levels
The ratio of image's height to its width
2. Answer the following (any seven). 14
Define Display Controller.
What is Shearing and Reflection
What is pixel phasing
Consider a triangle ABC where coordinates are and
1). Rotate with an angle of 90 degree in anticlockwise direction.
What is bitmap and pixmap
Give the full form of the following
TIFF JPEG.
What are the applications of Computer Graphics
Define Circle with its syntax.
Translate a square ABCD by 2 units in X-axis and 3 units in Y-axis where
coordinates are and 2).
3. Answer any two of the following 10
Give the syntax of the following functions.
initgraph() ellipse() drawpoly()
setlinestyle setfillstyle()
What is the need of homogeneous coordinate matrix Give the
homogeneous matrix representation of the basic transformation.
Write Bresenham's Line-Drawing algorithm for
Explain Display File Interpreter and Display File Structure. 4
4. Answer any two of the following 14
Translate a triangle ABC by 5 units in X direction where coordinates are
and 10).
Explain character generation with its three basic methods.
Differentiate between Raster Scan and Random Scan Display.
5. Answer any two of the following 14
Perform 45 degree rotation of the triangle and
about an arbitrary point
Explain Aliasing and Anti-aliasing in detail.
What are the types of input devices Explain any three of them.