1. In computer graphics, pictures or graphics objects are presented as a collection of discrete picture elements called__________
(A) Dots
(B) Pixels
(C) Coordinates
(D) Points
Answer : B
2. In graphical system, the array of pixels in the picture are stored in :
(A) Memory
(B) Frame buffer
(C) Processor
(D) All of the mentioned
Answer : B
3. The maximum number of points that can be displayed without overlap on a CRT is reffered as :
(A) Picture
(B) Resolution
(C) Persistence
(D) Neither (b) and (c)
Answer : B
4. In LCD, the refresh rate of the screen is :
(A) 60 frames/sec.
(B) 80 frames/sec.
(C) 30 frames/sec.
(D) 100 frames/sec.
Answer : A
5.The primary output device in a graphic system is :
(A) Scanner
(B) Video monitor
(C) Neither (a) nor (b)
(D) Printer
Answer : B
6. Aspect ratio means:
(A) Number of pixels
(B) Ratio of vertical points to horizontal points
(C) Ratio of horizontal points to vertical points
(D) Both (b) and (c)
Answer : B
7. What is the name of the space in which the image is displayed ?
(A) World co-ordinate system
(B) Screen co-ordinate system
(C) World window
(D) Interface window
Answer : B
8. We translate a two-dimensional point by adding :
(A) Transaltion distance
(B) Translation difference
(C) X and Y
(D) Only (a)
Answer : A
9. If the magnitude of the curve slope is lesser than 1, then :
(A) We can plot horizontal spans
(B) We can plot vertical spans
(C) Only (b)
(D) All of the mentioned
Answer : B
10.One of the method for displaying thick curve
(A) Curve slope
(B) Curve width
(C) Curve cap
(D) Only (C)
Answer : A
11. Which one is the rigid body transformation that moves object without deformation.
(A) Transaltion
(B) Sclaing
(C) Rotation
(D) Shearing
Answer : D
12. An ellipse can also be rotated about its center coordinates by rotating
(A) End points
(B) Major and minor axis
(C) Only (a)
(D) None
Answer : B
13. Which of the following is not a line-type ?
(A) Dashed line
(B) Dark line
(C) Dotted line
(D) Only (b)
Answer : B
14. Pixel mask means :
(A) A string containing only 1’s
(B) A string containing only 0’s
(C) A string containing 1 and 0
(D) A string containing only 0 and 0
Answer : C
15. Which devices provide positional information to the graphics system?
(A) Input device
(B) Output device
(C) Pointing device
(D) Both (a) and (c)
Answer : A
1. The father of animation
(A) Walt Disney
(B) J. Stuart Blackton
(C) William Horner
(D) J.A. Ferinard plateau
Answer : B
2. Which animation is used to animate things that are smaller than life size.
(A) Immersive
(B) Clay motion
(C) Stop motion
(D) Augmented
Answer : C
3. The most commonly used boundary presentation for a 3D graphics object is :
(A) Data polygon
(B) Surface polygon
(C) System polygon
(D) None of these
Answer : B
4. The intersection point of visual rays with PPP is :
(A) Penetrating point
(B) Piercing point
(C) Exit point
(D) Vanishing point
Answer : B
5. Which one is vertical projection plane used to obtain the objects perspective :
(A) Orthographic plane
(B) Vertical plane
(C) Perpective picture plane
(D) Horizontal plane
Answer : C
6. GIF stands for _______
(A) Global Image Format
(B) Graphics Interchange Format
(C) Graphics Image Format
(D) None of the above
Answer : B
7. The process of mapping a world window in world coordinate system to viewport are called
(A) Transformation viewing
(B) Viewport
(C) Clipping window
(D) Screen coordinate system
Answer : A
8. The process of extracting a portion of a database or a picture inside or outside a specified region are called
(A) Transformation
(B) Projection
(C) Clipping
(D) Mapping
Answer : C
9. The rectangle portion of the interface window that defines where the image will actually appear are called
(A) Transformation viewing
(B) View port
(C) Clipping window
(D) Screen coordinate system
Answer : B
10. Coordinates of window are knows as _______
(A) Screen coordinates
(B) World coordinates
(C) Device coordinates
(D) Cartesian coordinates
Answer : B
11. Coordinates of viewport are known as _______
(A) World coordinates
(B) Polar coordinates
(C) Screen coordinates
(D) Cartesian coordinates
Answer : C
12. The region against which an object is clipped is called a _______
(A) Clip square
(B) Enclosing rectangle
(C) Boundary
(D) Clip window
Answer : D
13. _______ identifies the picture portions that are exterior to the clip window
(A) Interior clipping
(B) Exterior clipping
(C) Extraction
(D) None of the above
Answer : B
14. The _______ algorithm divides a 2D space into 9 regions, of which only the middle part (viewport) is visible.
(A) Cohen-Sutherland
(B) Liang Barsky
(C) Sutherland Hodegeman
(D) N-L-N
Answer : A
15. Sutherland Hodgeman algorithm works well for _______
(A) Concave polygon
(B) Convex polygon
(C) Smooth curves
(D) Line segment
Answer : B
1. How many types of video compression ?
(A) 2
(B) 3
(C) 4
(D) 5
Answer : A
2. Which image files are a lossy format ?
(A) GIF
(B) MPEG
(C) JPEG
(D) PNG
Answer : C
3. How many step process for creating a 3D animation ?
(A) 1
(B) 2
(C) 3
(D) 4
Answer : C
4. JPEG stands for :
(A) Joint Photo Experts Gross
(B) Joint Photographic Experts Gross
(C) Joint Photographic Experts Group
(D) Joint Photographic Expression Group
Answer : C
5. Which compression provide some loss of quality?
(A) Loss less
(B) Lossy
(C) Cel based
(D) Object based
Answer: B
6. ______ acts as anode in CRT
(A) The phosphorous coating
(B) The glass panel
(C) The deflectors
(D) None of these
Answer : A
7. Slope of the line Joining the points (1,2) and (3,4) is :
(A) 1
(B) 2
(C) 3
(D) 4
Answer : A
8. Which device is used to grasp a virtual object?
(A) Space ball
(B) Data glove
(C) Digitizer
(D) Touch panels
Answer : B
9. The maximum number of dots that can be displayed without overlap on CRT is referred to as :
(A) Refresh rate
(B) Interlacing
(C) Screen resolution
(D) None of these
Answer : C
10. When projection lines are perpendicular to the view plane then such type of projection is called :
(A) Parallel
(B) Perspective
(C) Orthographic
(D) Oblique
Answer : C
11. The viewing transformation is formed by-
(A) Translations
(B) Translations and scaling
(C) Translations, scaling and reflection
(D) Transslation, scaling and rotation
Answer : D
12. Minimum memory required for frame buffer when resolution is 800X600 and bit/pixel is 8 ?
(A) 512 KB
(B) 1 MB
(C) 2 MB
(D) 256 KB
Answer : A
13. Which is not image file format ?
(A) bmp
(B) jpg
(C) tiff
(D) Both (a) and (b)
Answer : C
14. How many matrices are required to rotate an object about points (x,y) ?
(A) 2
(B) 3
(C) 4
(D) 5
Answer : B
15. If direction of rotation is Z-axis, then direction of position of positive rotation is :
(A) y to x
(B) z to x
(C) x to y
(D) y to z
Answer : B
1. DDA stands for :
(A) Digital differential analyzer
(B) Digital data analyzer
(C) Discrete data analyzer
(D) Discrete differential analyzer
Answer : A
2. Disadvantage of DDA is :
(A) Round of error
(B) Subtraction error
(C) Addition error
(D) Both (a) and (b)
Answer : A
3. In Brasenham’s circle generation algorithm if(x,y) is the current pixel position then y-value of the next pixel position is :
(A) Y or Y+1
(B) Y alone
(C) Y+1 or Y-1
(D) Y or Y-1
Answer : C
4. Brasenham’s algorithm seeks to select the optimum raster locations that represent a :
(A) Straight line
(B) Curve line
(C) Polygon
(D) None of these
Answer : A
5. The DDA algorithm is a faster method for calculating pixel positions than direct use of line equation using y=mx+c because
(A) It eliminates floating point addition
(B) It eliminates floating point multiplication
(C) It eliminates rounding operation
(D) None of these
Answer : B
6. In circle drawing algorithm we use –
(A) 4 Symmetry
(B) 2 Symmetry
(C) 8 Symmetry
(D) No Symmetry
Answer : C
7. Clipping algorithm are
(A) Two or three dimensional
(B) Two dimensional
(C) Three dimensional
(D) None of these
Answer : A
8. Bresenham’s line drawing is superior then DDA because
(A) It does not require floating point arithmentic
(B) No round-up is required
(C) Both (a) and (b)
(D) It is eassily computable
Answer : C
9. In 2D graphics, if S1 & S2 are two scaling matrix and T1 and T2 are two transition matrices then
(A) S1S2=S2S1
(B) S1T1=S2T2
(C) T2S2=T1S1
(D) S1T1=T2S1
Answer : A
10. Parametric equation of straight line (where 0≤ t ≤1)is :
(A) P(t) = P0+(P1+P0)t
(B) P(t) = P0+(P1-P0)t
(C) P(t) = P0-(P1-P0)t
(D) P(t) = P0-(P1+P0)t
Answer : A
11. The slope of the Bezier curve at the starting of the curve is controlled by :
(A) First control point
(B) First two control points
(C) First three control points
(D) All four control points
Answer : C
12. Z-buffer algorithm is used for :
(A) Frame buffer removal
(B) Hidden line removal
(C) Rendering
(D) Animation
Answer : B
13. Sutherland Hodgemon algorithm is used for :
(A) Line clipping
(B) Point clipping
(C) Polygon clipping
(D) Hybrid clipping
Answer : C
14. In Bresenham’s circle generation algorithms if (x,y) is the current pixel position then the x-value of the next pixel position is :
(A) X
(B) X-1
(C) X+1
(D) X+2
Answer : C
15. The basic principle of Bresenham’s line algorithm is _____
(A) To select optimum raster location
(B) To select either ^x or ^y whichever is larger
(C) We find on which sides of the line the midpoint lies
(D) Both (a) and (b)
Answer : A
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