WorksheetsTest Kualifikasi Grafika Komputer
Total questions: 70
Worksheet time: 35mins
Which of the following statements define Computer Graphics?
It refers to designing plans
It means designing computers
It refers to designing images
None of the mentioned
Among the given scientists/inventor who is known as the father of Computer Graphics?
Nikola Tesla
Ivan Sutherland
Ada Lovelace
Marie Curie
Which of the following are the features of Computer Graphics?
Creation and deletion of images by computer only
Deletion and manipulation of graphical images by computer
Creation and manipulation of graphics by computer
Creation of artificial images by computer only
Which of the following is a Computer Graphics type?
Raster and Vector
Raster and Scalar
Scalar only
All of the above
Which of the following plane is used for 2D transformations?
Three-dimensional plane
Two-dimensional plane
One-dimensional plane
Four-dimensional Plane
Which of the following is a Computer Graphics Curve?
Bezier Curves
Implicit Curves
Explicit Curves
All of the above
Who is the first user of computer graphics?
William Fetter
Ivan Edward Sutherland
Ada Lovelace
Nicholas Williams
Which of the following is the purpose for using clipping in computer graphics?
copying
zooming
adding graphics
removing objects and lines
In a graphical system, an array of pixels in the picture are stored in which of the following locations?
Frame buffer
Processor
Memory
All of the mentioned
Curves in computer graphics is primarily used for which of the following function?
To draw different types of objects onto the screen
Zooming out a picture
Copying a picture
Zooming in a picture
__________ types of translation are present in computer graphics.
5
3
4
6
Bitmap is a collection of ____________ that describes an image.
pixels
algorithms
bits
colors
Which of the following devices provides positional information to the graphics system?
Pointing devices
Both Input devices and Pointing devices
Output devices
Input devices
Which of the following is defined as the number of pixels stored in the frame buffer of a graphics system?
Resalution
Resolution
Depth
None of the mentioned
Which of the following is a primary output device of a graphics system?
Printer
Scanner
Video monitor
Neither Scanner nor Video monitor
Which of the following is used in graphics workstations as input devices to accept voice commands?
Speech recognizers
Touch panels
None of the mentioned
All of the mentioned
What is the use of voice system input?
To enter data
To initiate graphics operation and also to enter data
To initiate graphics operation
None of the mentioned
Which of the following is defined as the process of elimination of parts of a scene outside a window or a viewport?
editing
cutting
plucking
clipping
Which of the following is known as the window opened on the raster graphics screen in which the image will be displayed?
Interface window
World window
World co-ordinate system
Screen co-ordinate system
Which of the following operations can be used to zoom in or out around any axis on a three-dimensional object from its original position?
Rotation
Shearing
Scaling
Translation
Among the following process, which process is known as the elimination of parts of a scene outside a window or a viewport?
editing
plucking
cutting
clipping
Which statement is true?
Viewing transformation is the process of mapping a world window in World Coordinates to the Viewport.
Viewing transformation is the process of mapping a world window in Viewport to the World Coordinate.
Viewing transformation is the process of mapping a world window in Viewport Coordinate to the World Coordinate.
None of the mentioned
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?
Zooming
Panning
Tiling
Roaming
How many axes do 3D graphics consist of?
Two axes
Three axes
Five axes
One axis
Which of the following is the most commonly used boundary representation for a 3-dimensional graphics object?
Volume polygon
System polygon
Data polygon
Surface polygon
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?
Scan conversion
True color system
Encoding
Rasterization
Which of the following is commonly known as frame buffer on a black and white system with one bit per pixel?
Bitmap
Pix map
Multi map
All of the mentioned
Which of the following algorithm is a faster method for calculating pixel positions?
Parallel line algorithm
Mid-point algorithm
DDA line algorithm
Bresenham’s line algorithm
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 ____
Parallel curve algorithm
Flood-fill algorithm
Scan-line fill algorithm
Boundary-fill algorithm
Which of the following defines a pixel mask?
A string containing 1 and 0
A string containing 0 and 0
A string containing only 0’s
A string containing only 1's
What does an aspect ratio mean?
Ratio of vertical points to horizontal points
Ratio of vertical points to horizontal points and horizontal points to vertical points
Number of pixels
Ratio of horizontal points to vertical points
Which of the following is a correct abbreviation of DDA algorithm?
Data differential analyzer
Direct differential analyzer
Digital difference analyzer
Digital differential analyzer
The Cohen-Sutherland algorithm divides the region into how many spaces?
9
8
7
6
Beside Cohen Sutherland algorithm, there is another algorithm that act similar with it, it is ________
Liang-Sutherland
Liang-Barsky
Bressenham-Ivan
None of all the mentioned
Which of the following clipping process handles the clipping of strings?
Text Clipping
Exterior Clipping
Curve Clipping
Shape Clipping
A translation is applied to an object by
Repositioning it along with straight line path
Repositioning it along with circular path
Only b
All of the mentioned
We translate a two-dimensional point by adding
Translation distances
Translation difference
X and Y
All of the mentioned
The translation distances (dx, dy) is called as
Translation vector
Shift vector
Both a and b
Neither a nor b
In 2D-translation, a point (x, y) can move to the new position (x’, y’) by using the equation
x’=x+dx and y’=y+dx
x’=x+dx and y’=y+dy
X’=x+dy and Y’=y+dx
X’=x-dx and y’=y-dy
The two-dimensional translation equation in the matrix form is
P’=P+T
P’=P-T
P’=P*T
P’=p
_________ is a rigid body transformation that moves objects without deformation.
Rotation
Scaling
Translation
All of the mentioned
To change the position of a circle or ellipse we translate
Center coordinates
Center coordinates and redraw the figure in new location
Outline coordinates
All of the mentioned
The basic geometric transformations are
Translation
Rotation
Scaling
All of the mentioned
To generate a rotation , we must specify
Rotation angle ϴ
Distances dx and dy
Rotation distance
All of the mentioned
Positive values for the rotation angle ϴ defines
Counterclockwise rotations about the end points
Counterclockwise translation about the pivot point
Counterclockwise rotations about the pivot point
Negative direction
The transformation that is used to alter the size of an object is
Scaling
Rotation
Translation
Reflection
If the scaling factors values sx and sy < 1 then
It reduces the size of object
It increases the size of object
It stunts the shape of an object
None
If the scaling factors values sx and sy are assigned to unequal values then
Uniform rotation is produced
Uniform scaling is produced
Differential scaling is produced
Scaling cannot be done
If the value of sx=1 and sy=1 then
Reduce the size of object
Distort the picture
Produce an enlargement
No change in the size of an object
If point are expressed in homogeneous coordinates then the pair of (x, y) is represented as
(x’, y’, z’)
(x, y, z)
(x’, y’, w’)
(x’, y’, w)
What is the use of homogeneous coordinates and matrix representation?
To treat all 3 transformations in a consistent way
To scale
To scale
To shear the object
We can combine the multiplicative and translational terms for 2D into a single matrix representation by expanding
2 by 2 matrix into 4*4 matrix
2 by 2 matrix into 3*3
3 by 3 matrix into 2 by 2
Only c
The distortion of information due to low-frequency sampling is known as
Sampling
Aliasing
Inquiry function
Anti-aliasing
Which of the following equation is correct for the new Z co-ordinate if an object undergoes 3D rotation around x axis?
Znew = Yold x sinθ – Zold x cosθ
Znew = Yold x sinθ + Zold x cosθ
Znew = Yold x cosθ – Zold x sinθ
Znew = Yold x cosθ + Zold x sinθ
Which of the following equation is correct for the new X co-ordinate if an object undergoes 3D rotation around y axis?
Xnew = Zold x cosθ – Xold x sinθ
Xnew = Zold x cosθ + Xold x sinθ
Xnew = Zold x sinθ – Xold x cosθ
Xnew = Zold x sinθ + Xold x cosθ
Which of the following equation is correct for the new X co-ordinate if an object undergoes 3D rotation around z axis?
Xnew = Xold x cosθ – Yold x sinθ
Xnew = Xold x cosθ + Yold x sinθ
Xnew = Xold x sinθ – Yold x cosθ
Xnew = Xold x sinθ + Yold x cosθ
What will be the final coordinates after rotation of the point P(5, 5, 5) at 90° about Z-axis?
(5, -5, -5)
(-5, -5, -5)
(-5, 5, 5)
(5, -5, 5)
What will be the final coordinates after rotation of the point P(2, 3, 7) at 90° about X-axis?
(2, -7, -3)
(-2, -7, -3)
(-2, 7, 3)
(2, -7, 3)
Which of the following transformation is a rotation where angle of rotation is 180°?
Rotation
Shearing
Reflection
Translation
Given a 3D shape with coordinates A(6, 4, -2), B(5, -3, 6), C(2, 1, -5) and D(-2, 4, 7), what will be the new coordinates if the shape undergoes 3D reflection relative to XZ plane?
A(-6, -4, -2), B(-5, -3, -6), C(-2, -1, -5), D(-2, -4, -7)
A(6, 4, 2), B(5, 3, 6), C(2, 1, 5), D(2, 4, 7)
A(6, 4, 2), B(-5, 3, -6), C(-2, -1, 5), D(2, 4, -7)
A(6, -4, -2), B(5, 3, 6), C(2, -1, -5), D(-2, -4, 7)
The planar geometric projections can be divided into how many categories?
2
3
4
5
The Parallel Projection can be divided into how many categories?
6
8
2
5
Which of the following orthographic parallel projection is called as a plan view?
Front
Side
Rear
Top
n which of the following projection, the object size differs when look from different distances?
Parallel Projection
Cavalier Projection
Perspective projection
Cabinet Projection
Perspective projection can be divided into how many categories?
3
4
5
6
In perspective projection, which of the following is the point where all lines will appear to meet?
Projectors
Projection Plane
Point of Projection
Vanishing Point
Which of the following type of perspective projection is used in drawings of railway lines?
One-point
Two-point
Three-point
Perspective projection is not used to draw railway lines
What is the primary use of clipping in computer graphics?
adding graphics
removing objects and lines
zooming
copying
In line clipping, the portion of line which is _____________ of window is cut and the portion that is _____________ the window is kept.
outside, inside
inside, outside
exact copy, different
different, an exact copy
The arrangement of bit code in Cohen Sutherland algorithm is
Above, Below, Left, Right
Top, down, Right, Left
Left, Right, Below, Above
Above, Below, Right, Left
