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CS602- Computer Graphics
Solved MCQS
From Midterm Papers
Dec 18,2013

MIDTERM EXAMINATION
Spring 2013
CS602- Computer Graphics
Question No: 1 ( Marks: 1 ) - Please choose one
DDA abbreviated for ________.
None of the given
Discrete data analyzer
Digital data analyzer
Digital differential analyzer (Page 54)
Question No: 2 ( Marks: 1 ) - Please choose one
Save a line with both endpoints inside all clipping boundaries is called as _____________.
None of the given
Total …. (inside (maybe))
Trivial Reject
Trivial Accept (Page 142)
Question No: 3 ( Marks: 1 ) - Please choose one
__________ projection is obtained by projecting points along parallel lines that are not perpendicular to the
projection plane.
Perspective
Orthographic
Oblique (Page 198)
Question No: 4 ( Marks: 1 ) - Please choose one
The dot product of two vectors A and B is __________. Iff the angle between them is less than 90 or greater
than 270 degrees.
Greater than zero (0) (Page 177)
2
Less than zero (0)
Equal to Zero (0)
None of the given
Question No: 1 ( Marks: 1 ) - Please choose one
This projection technique has the direction of projection perpendicular to the viewing plane, and the viewing
direction is perpendicular to one of the principle faces.
metric Parallel Projection
Oblique Parallel Projection
Orthographic Parallel Projection
None of the given
Question No: 5 ( Marks: 1 ) - Please choose one
Orthographic projections that show more than one side of an object are called __________ projections.
Cavalier
Cabinet
Axonometric (Page 196)
Perspective
Question No: 6 ( Marks: 1 ) - Please choose one
Computer Graphics are used in ____________.
Movies development
Simulations
All of the given
Game development
Question No: 7 ( Marks: 1 ) - Please choose one
“Computer Graphics” and “Computer Vision” are ____________.
Same fields
Interrelated fields
None of the given
Totally different fields http://en.wikipedia.org/wiki/Computer_vision
Question No: 8 ( Marks: 1 ) - Please choose one
We can take transpose of __________.
matrix with 1 row 1 column
matrix with 2 rows 3 columns
matrix with 3 rows 2 columns
any matrix
3
Question No: 9 ( Marks: 1 ) - Please choose one
If the polygons are _______, line-clipping techniques are sufficient for clipping.
filled
unfilled (Page 146)
half filled
All of the given
Question No: 10 ( Marks: 1 ) - Please choose one
20: Because clipping against one edge is independent of all others, so it is _______ to arrange the clipping
stages in a pipeline.
Sometimes impossible
None of the given
Possible (Page 150)
Impossible
Question No: 11 ( Marks: 1 ) - Please choose one
Tessellation can be adaptive to the ____________ degree of curvature of a surface.
Local (Page 170)
Static
Global
Variable
Question No: 12 ( Marks: 1 ) - Please choose one
The actual filling process in boundary filling algorithm begins when a point _________ of the figured is
selected.
Outside the boundary
Inside the boundary (Page 102)
At boundary
None of the above
Question No: 13 ( Marks: 1 ) - Please choose one
Discard a line with both endpoints outside clipping boundary is called as ____________
Trivial accept
Trivial reject (Page 142)
Total outside
None of the above
4
Question No: 14 ( Marks: 1 ) - Please choose one
_____________is the tendency of the text to flash as it moves up or down.
Flickering (Page 38)
Snow
Distortion
None of the above
Question No: 15 ( Marks: 1 ) - Please choose one
The axonometric projection is ___________ where the direction of projection makes same angle with all axes.
DIMETRIC
Isometric (Page 196)
Oblique
Trimetric
Question No: 16 ( Marks: 1 ) - Please choose one
We can draw the circle using _________
Pentane
Hexane
Trident
Octant (Page 63)
Question No: 17 ( Marks: 1 ) - Please choose one
_________ direct view storage tube maintains the picture display.
Electron gun
Proton gun
Flood gun (Page 29)
All of the above
Question No: 18 ( Marks: 1 ) - Please choose one
Because clipping against one edge is independent to all others, so it is ________ arrange the clipping stages in a
pipeline.
Possible (Page 150) rep
Impossible
Sometimes impossible
None of the above
5
Question No: 19 ( Marks: 1 ) - Please choose one
If the polygons are _________ line clipping techniques are sufficient for clipping.
Filled
Unfilled (Page 146) rep
Half filled
All of the above
Question No: 20 ( Marks: 1 ) - Please choose one
Polygons consisting of _________________ can cause problems when rendering.
Non-coplanar vertices (Page 169)
Co-planar vertices
Any vertices
None of the above
Question No: 1 ( Marks: 1 ) - Please choose one
In Trivial acceptance/reject test there are four bits of nine regions, Bit3 represents condition ______________.
Outside half plane of left edge, to the left of left edge X < Xmin
Outside half plane of right edge, to the right of right edge X > Xmax (Page 143)
Outside half plane of bottom edge, below bottom edge Y < Ymin
Outside half plane of top edge, above top edge Y > Ymax
Question No: 2 ( Marks: 1 ) - Please choose one
Plasma-panel displays use a gas mixture that usually includes _____________.
Zinc
Iron
6
CS602 – Solved Quizzes (Quiz No.1 & 2)
Question No: 1 of 10 ( Marks: 1 ) - Please choose one
A line, or straight line, is, roughly speaking, an (infinitely) thin, (infinitely) long, straight geometrical object.
True (Page 53)
False
Question No: 2 of 10 ( Marks: 1 ) - Please choose one
Both Boundary Filling and Flood filling algorithms are _____________ as compared to scan line filling
algorithm.
Better
Worse
Almost same
Good
Question No: 3 of 10 ( Marks: 1 ) - Please choose one
( x^2 / a^2 ) + ( y^2 / b^2 ) = 1 is an equation of ____________________________.
Parabola
Hyperbola
Ellipse (Page 70)
Circle
Question No: 4 of 10 ( Marks: 1 ) - Please choose one
We can draw the circle using ____________________.
Pentane
Hexanes
Trident
Octants (Page 63) rep
Question No: 5 of 10 ( Marks: 1 ) - Please choose one
A scaling transformation alters the _______________ of an object.
Shape
Position
Size (Page 120)
Rotation
7
Question No: 6 of 10 ( Marks: 1 ) - Please choose one
Boundary Filling Algorithm can work for complex polygons.
True
False
Question No: 7 of 10 ( Marks: 1 ) - Please choose one
A __________________ is the set of all points (x , y) that are the same distance from the directrix and focus
not on the directrix.
Circle
Hyperbola
Parabola (Page 73)
Ellipse
Question No: 8 of 10 ( Marks: 1 ) - Please choose one
Monochrome Adapter (MA) is a single color adapter
True (Page 38)
False
Question No: 9 of 10 ( Marks: 1 ) - Please choose one
If the value of scaling factors sx and sy is greater than 1, then size of objects will be _____________________.
Reduced
Enlarged (Page 121)
Remain same
Shear
Question No: 10 of 10 ( Marks: 1 ) - Please choose one
In ___________________ algorithm(s), old color must be read before it is invoked.
Scan line filling
Flood filling (Page 104)
Both scan line and flood filling
Scan filling
Question No: 1 of 10 ( Marks: 1 ) - Please choose one
Parity is a concept used to determine which _________________ lie within a polygon.
Edge
Vertices
Pixels (Page 80)
Points
8
Question No: 2 of 10 ( Marks: 1 ) - Please choose one
Various curve functions are useful in ________________________.
Object modeling (Page 69)
Graphics applications
Animation path specifications
All of the given
Question No: 3 of 10 ( Marks: 1 ) - Please choose one
polygons are basically concave polygons that may have self-intersecting edges.
Complex (Page 79)
Hybrid
Convex
Convex and Hybrid
Question No: 4 of 10 ( Marks: 1 ) - Please choose one
Concave polygons are a superset of _____________________ polygons, having fewer restrictions than
____________________ polygons.
Hybrid, Complex
Concave, Complex
Convex, Convex (Page 79)
Complex, Complex
Question No: 5 of 10 ( Marks: 1 ) - Please choose one
There are ________________ basic types of polygon.
2
3 (Page 78)
4
5
Question No: 6 of 10 ( Marks: 1 ) - Please choose one
We can draw eight points corresponding to each (x , y) point calculation in ____________________ drawing
algorithm.
Sutherland
Mid Clipping
Mid Point Circle
Sutherland Clipping
9
Question No: 7 of 10 ( Marks: 1 ) - Please choose one
the horizontal refresh ------------------------------
Is no longer used in any system
Is distracting and can cause eye fatigue
eye into thinking the horizontal refresh rate is faster
Question No: 8 of 10 ( Marks: 1 ) - Please choose one
Computer graphics is very helpful in producing graphical representations for scientific visualization.
True (Page 9)
False
Question No: 9 of 10 ( Marks: 1 ) - Please choose one
In video text memory, ______ are used to display a character.
2 bytes (Page 43)
4 bytes
8 bytes
16 bytes
Question No: 10 of 10 ( Marks: 1 ) - Please choose one
The basis functions fi(u) in Bezier curve must be symmetric with respect to u and (u-2)
Yes
No (Page 341)
Question No: 1 of 10 ( Marks: 1 ) - Please choose one
Three or more points that lie on the same line are called ______________.
 Singular
 Collinear (Page 53)
 Line slop
 Line slop and Singular
Question No: 2 of 10 ( Marks: 1 ) - Please choose one
Cross product of two vectors result in a ____________________.
 Magnitude
 Vector (Page 116)
 Scalar
 Value
10
Question No: 3 of 10 ( Marks: 1 ) - Please choose one
To move a __________________ from one location to another, we translate the center point and redraw the
same using new center point.
 Hyperbola
 Parabola
 Circle (Page 119)
 Line

Question No: 4 of 10 ( Marks: 1 ) - Please choose one
_________________ is the set of points that are equidistant from its origin.
 Line
 Parabola
 Circle (Page 59)
 Ellipse
Question No: 5 of 10 ( Marks: 1 ) - Please choose one
It is safe to assume that all raster-type monitors can accept the same input
 True
 False
Question No: 6 of 10 ( Marks: 1 ) - Please choose one
Twice the radius of circle is called as ____________________.
 Area
 Diameter (Page 59)
 2*Pi Radian
 Circumference
Question No: 7 of 10 ( Marks: 1 ) – Please choose one
Both Boundary Filling and Flood filling algorithms are non-recursive techniques.
1. True
2. False (Page 102)
11
Question No: 8 of 10 ( Marks: 1 ) - Please choose one
We can take transpose of any matrix.

 True
 False
Question No: 9 of 10 ( Marks: 1 ) - Please choose one
Normalized cross product of two vectors on that surface provides normal vector
YES (Page 347)
NO
Question No: 10 of 10 ( Marks: 1 ) - Please choose one
Set up your tripod and pointing the camera at the scene
projection transformation
viewport transformation
modeling transformation
viewing transformation (Page 372)
Question No: 1 of 10 ( Marks: 1 ) - Please choose one
_________ is based on characteristic size or scale
Fractal Geometry
Traditional Geometry
Euclidean Geometry
None of Above
Question No: 2 of 10 ( Marks: 1 ) - Please choose one
Bernstein polynomial functions are the basic functions of ______________ curves.
NURBS
Bezier
Both NURBS and Bazier (Page 342) not confirm
None of the given
Question No: 3 of 10 ( Marks: 1 ) - Please choose one
12
Silhouette edges occur when dot product of surface normal vector and the view vector is __________.
Zero (Page 345)
One
Both zero and one
None of the given
Question No: 4 of 10 ( Marks: 1 ) - Please choose one
A fractal is generally a property called ___________.
Fractal Dimension
Self-similarity
Koch Curve
None of above
Question No: 5 of 10 ( Marks: 1 ) - Please choose one
The curve is always contained within the _______ of the control points
Tangents
Convex Hull (Page 340)
Subdivision
None of Above
Question No: 6 of 10 ( Marks: 1 ) - Please choose one
_________ OpenGL function is used for aiming and positioning the camera towards the object
glLoadIdentity()
gluLookAt() (Page 374)
glFrustum()
None of Above
Question No: 7 of 10 ( Marks: 1 ) - Please choose one
13
Bezier curve can represent the more complex piecewise ___________ curve.
Polynomial (Page 338)
Exponential
Cubic
None of above
Question No: 8 of 10 ( Marks: 1 ) - Please choose one
Perspective projection is specified with the function glFrustum().
Yes (Page 376)
No
Question No: 9 of 10 ( Marks: 1 ) - Please choose one
Line connecting any two points within a polygon does not intersect any edge, then it will be a _________
polygon.
Convex (Page 79)
Concave
Complex
None of the given
Question No: 10 of 10 ( Marks: 1 ) - Please choose one
The _______________ tests are performed for the midpoints between pixels near the circle path at each
sampling step.
Parabola function
Eclipse function
Circle function (Page 62)
Line function
Question No: 1 of 10 ( Marks: 1 ) - Please choose one
actual filling process in boundary filling algorithm begins when a point _____________ of the figure is
selected.
Outside the boundary
Inside the boundary (Page 102) rep
At boundary
None of the given
Question No: 2 of 10 ( Marks: 1 ) - Please choose one
Each hyperbola consists of two ____________________________ .
Vertices
Nodes
Branches (Page 70)
Points
Question No: 3 of 10 ( Marks: 1 ) - Please choose one
14
Rotating a point requires
The coordinates for the point
The rotation angles
Both of above (Page 180)
None of given
Question No: 4 of 10 ( Marks: 1 ) - Please choose one
Vectors can be multiplied in a way
Dot product
Cross product
Both of above (page 176)
None of given
Question No: 5 of 10 ( Marks: 1 ) - Please choose one
Shortcoming of Sutherland-Hodgeman Algorithm is concave polygons may be displayed with extensors
lines
True (Page 244)
False
Question No: 6 of 10 ( Marks: 1 ) - Please choose one
The process of subdivision an entity or surface into one or more non-overlapping primitives.
Rendering
Modeling
Meshing
None of above (page 259)
Question No: 7 of 10( Marks: 1 ) - Please choose one
In Trivial acceptance/reject test there are four bits of nine regions, Bit 4 represents condition ______________.
Outside half plane of left edge, to the left of left edge X < Xmin (Page 143)
Outside half plane of right edge, to the right of right edge X > Xmax
Outside half plane of bottom edge, below bottom edge Y < Ymin
Outside half plane of top edge, above top edge Y > Ymax
Question No: 8 of 10 ( Marks: 1 ) - Please choose one
In Trivial acceptance/reject test there are four bits of nine regions, Bit 2 represents condition ______________.
Outside half plane of left edge, to the left of left edge X < Xmin
Outside half plane of right edge, to the right of right edge X > Xmax
Outside half plane of bottom edge, below bottom edge Y < Ymin (page 143)
Outside half plane of top edge, above top edge Y > Ymax
Question No: 9 of 10 ( Marks: 1 ) - Please choose one
15
__________ is the process of describing an object or scene so that we can construct an image of it
Rendering
Modeling (Page 164)
Meshing
None of above
Question No: 10 of 10 ( Marks: 1 ) - Please choose one
Sutherland-Hodgeman clipping algorithm clips any polygon against a concave clip polygon
True
False (Page 244)
Question No: 1 of 10 ( Marks: 1 ) - Please choose one
Process of moving points in space is called
Rendering
Modeling
Meshing
None of above (Page 259)
Question No:2 of 10 ( Marks: 1 ) - Please choose one
When scaling factor Sx and Sy are assigned the same value, ___________________ scaling is produced that
maintains relative object proportions.
Uniform (page 121)
Unequal
Multiform
Equal
Question No: 3 of 10 ( Marks: 1 ) - Please choose one
___________________ transformation produces shape distortions as if objects were composed of layers that
are caused to slide over each other.
Rotation
Translation
Reflection
Shear (Page 129)
Question No: 4 of 10 ( Marks: 1 ) - Please choose one
Global coordinate systems can be defined with respect to local coordinate system
True
False (Page 163)
Question No: 1 of 10 ( Marks: 1 ) - Please choose one
16
The given primitives are clipped to the boundaries of ________________ and primitives lying outside are
not drawn.
Clipping polygon
Clipping circle
Clipping rectangle (Page 247)
Clipping Line
Question No: 5 of 10 ( Marks: 1 ) - Please choose one
In 2D transformation, _______________ can be achieved by rotating the object about 180 degrees.
Translation
Scaling
Shear
Reflection (page 191)
Question No: 6 of 10 ( Marks: 1 ) - Please choose one
Discard a line with both endpoints outside clipping boundaries is called as
Trivial reject (Page 142)
Trivial accept
Total outside
Total inside
Question No: 7 of 10 ( Marks: 1 ) - Please choose one
In _______________ transformation one coordinate is held fixed and the other coordinate or coordinates
are shifted.
Rotation
Reflection
Shear click here for detail
Scaling
Question No: 8 of 10 ( Marks: 1 ) - Please choose one
Locations can be translated or "transformed" from one coordinate system to the other. Select correct
option:
True (Page 163)
False
Question No: 9 of 10 ( Marks: 1 ) - Please choose one
17
Geometric patterns that is repeated at ever smaller scales to produce irregular shapes and surfaces are
called ___________
Geometric patterns
Fractals (page 352)
Animated components
Segments
Question No: 10 of 10 ( Marks: 1 ) - Please choose one
Bezier curve is tangent to the lines connecting _____________.
First two points
Last two points
Fist two points and last two point (Page 340)
None of the given
Question No: 1 of 10 ( Marks: 1 ) - Please choose one
Intensity of the electron beam is controlled by setting _________ levels on the control grid, a metal
cylinder that fits over the cathode.
► Amplitude
► Current
► Voltage (Page 26)
► electron
Question No: 2 of 10 ( Marks: 1 ) - Please choose one
Using Cohen-Sutherland line clipping, it is impossible for a vertex to be labeled 1111.
► true
►false
Question No: 3 of 10 ( Marks: 1 ) - Please choose one
Shadow mask methods can display a __________ range of colours.
► Small
► Wide (Page 29)
► Random
► crazy
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Question No: 4 of 10 ( Marks: 1 ) - Please choose one
Which one of the following step is not involved to write pixel using video BIOS services.
► Setting desired video mode
► Using bios service to set color of a screen pixel
► Calling bios interrupt to execute the process of writing pixel.
► Using OpenGL service to set color of a screen pixel (Page 45)
Question No: 5 of 10 ( Marks: 1 ) - Please choose one
Each number that makes up a matrix is called an ___________ of the matrix.
► Element (page 106)
► Variable
► Value
► component