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1000 Computer Graphics
Quiz 2
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Q.1
Among the following process, which process is known as the elimination of parts of a scene outside a window or a viewport?
a) editing
b) plucking
c) cutting
d) clipping
Q.2
Viewing transformation is the process of mapping a world window in World Coordinates to the Viewport.
a) False
b) True
Q.3
Which of the following is defined as the drawing of number of copies of the same image in rows and columns across the interface window so that they cover the entire window?
a) Zooming
b) Panning
c) Tiling
d) Roaming
Q.4
How many axes dographics consist of?
a) Two axes
b) Three axes
c) Five axes
d) One axis
Q.5
Which of the following is the most commonly used boundary representation for a 3-dimensional graphics object?
a) Volume polygon
b) System polygon
c) Data polygon
d) Surface polygon
Q.6
Which of the following is the process of digitizing a given picture definition into a set of pixel-intensity for storage in the frame buffer?
a) Scan conversion
b) True color system
c) Encoding
d) Rasterization
Q.7
Which of the following is commonly known as frame buffer on a black and white system with one bit per pixel?
a) Bitmap
b) Pix map
c) Multi map
d) All of the mentioned
Q.8
Which of the following algorithm is a faster method for calculating pixel positions?
a) Parallel line algorithm
b) Mid-point algorithm
c) DDA line algorithm
d) Bresenham’s line algorithm
Q.9
If the boundary is specified in a single color, and if the algorithm proceeds pixel by pixel until the boundary color is encountered is known as ____
a) Parallel curve algorithm
b) Flood-fill algorithm
c) Scan-line fill algorithm
d) Boundary-fill algorithm
Q.10
Which of the following defines a pixel mask?
a) A string containing 1 and 0
b) A string containing 0 and 0
c) A string containing only 0’s
d) A string containing only 1;s
Q.11
What does an aspect ratio mean?
a) Ratio of vertical points to horizontal points
b) Ratio of vertical points to horizontal points and horizontal points to vertical points
c) Number of pixels
d) Ratio of horizontal points to vertical points
Q.12
Which of the following is a correct abbreviation of DDA algorithm?
a) Data differential analyzer
b) Direct differential analyzer
c) Digital difference analyzer
d) Digital differential analyzer
Q.13
The Cohen-Sutherland algorithm divides the region into how many spaces?
a) 9
b) 8
c) 7
d) 6
Q.14
The Cohen Sutherland algorithm is more efficient than the Liang-Barsky algorithm.
a) False
b) True
Q.15
Which of the following is used forpositioning and modeling, animation, and other application?
a) Spac ball
b) Trackball
c) Space ball
d) All of the mentioned
Q.16
Which of the following can be used to determine the position on the data tablet?
a) Either Signal strength or coded pulse
b) Coded pulse
c) Signal strength
d) Strip microphones
Q.17
Which of the following type of perspective projection is also called “Angular Perspective”?
a) Four-Point
b) Three-point
c) One-point
d) Two-point
Q.18
Which of the following type of perspective projection is used in drawings of railway lines?
a) Three-point
b) Two-point
c) One-point
d) Perspective projection is not used to draw railway lines
Q.19
Which of the following representation represents a three-dimensional object?
a) Function
b) Point
c) Polygon
d) Equation
Q.20
Which part of a picture is considered and saved in exterior clipping?
a) We don’t consider the picture in exterior clipping
b) Picture which is outside the view window
c) Picture which is inside the view window
d) Picture which is on the edges of the view window
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