1. The operation that is used for repositioned the object are called
Correct : C. Dragging
2. Which method are used to construct and position the straight lines, arcs and circles, etc
Correct : A. Rubber band method
3. Which are used to connect a line to already drawn line
Correct : B. Gravity field
4. The rubber band is also applicable to_______ objects
Correct : A. Scale
5. Which technique depends on viewer ability to reconstruct the scene from
Multiple projections.
Correct : A. Parallel projection
6. Which of the following does NOT figure into the Field of View of a pinhole camera?
Correct : A. The direction of projection
7. This projection technique has the direction of projection perpendicular to the viewing plane, but the viewing direction is NOT perpendicular to one of the principle faces.
Correct : B. Axonometric Parallel Projection
8. This projection technique does NOT have the direction of projection perpendicular to the viewing plane.
Correct : C. Oblique Parallel Projection
9. 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.
Correct : A. Orthographic Parallel Projection
10. When transforming a random Axis-Aligned Bounding Box defined by the points (nearx, neary, nearz) and (farx, fary, farz) to the standard orthographic viewing box, which affine transforms are used?
Correct : D. translation and scale
11. The purpose of the front and back clipping planes in OpenGL. Which of the
following was NOT a purpose for using clipping planes?
Correct : C. avoiding the problems of infinite viewing volume size
12. Oblique projection with an angle of 45 to the horizontal plane is called as:
Correct : C. Cavalier projection
13. The transformation in which an object is moved in a minimum distance path from one position to another is called
Correct : C. Translation
14. The transformation in which an object is moved from one position to another
in circular path around a specified pivot point is called
Correct : A. Rotation
15. A circle, if scaled only in one direction becomes a ?
Correct : A. Ellipse
16. The object refers to the 3D representation through linear, circular or some other representation are called
Correct : B. Sweep representation
17. A quad-tree is a data structure which is used for graphical representation of.....................
Correct : A. 2D digital picture or object
18. How many data elements for each region in quad-tree data structure
Correct : B. 4
19. ............... refer to the shapes created by union, intersection and difference of
given shapes
Correct : C. Constructive solid geometry methods
20. An octree is a data structure which is used for alternative representation of ....................
Correct : B. 3D picture or object
21. The text clipping strategy to reject an entire character string that overlaps a clip window is called................
Correct : B. All-or-none string clipping
22. A transformation that slants the shape of an object is called ....................
Correct : B. Shear
23. A method used to test lines for total clipping is equivalent to the .............
Correct : C. logical AND
24. The phenomenon of having a continuous glow of a beam on the screen even after it is removed is called as?
Correct : C. Phosphorescence
25. The region against which an object is clipped is called a ..............
Correct : A. Clip window
26. Identify line clipping algorithms from the following
Correct : D. All of the above
27. The process of mapping a world window in world coordinate system to
viewport are called
Correct : A. Transformation viewing
28. The process of extracting a portion of a database or a picture inside or outside a specified region are called
Correct : C. Clipping
29. The rectangle portion of the interface window that defines where the image will actually appear are called
Correct : B. View port
30. The phenomenon of having a continuous glow of a beam on the screen even after it is removed is called as ?
Correct : C. Phosphorescence
31. Coordinates of window are knows as ..............
Correct : B. World coordinates
32. Coordinates of viewport are known as ............
Correct : C. Screen coordinates
33. ............. identifies the picture portions that are exterior to the clip window
Correct : B. Exterior clipping
34. The region code of a point within the window is ............
Correct : B. 0000
35. A line with endpoints codes as 0000 and 0100 is
Correct : A. Partially invisible
36. If the object uses the golden mean in its distances from the viewer, its
perspective will have a golden mean proportion to the
Correct : B. back corner
37. Find the odd one out
Correct : D. None of these
38. Which of the following is the equation involved in window to viewport mapping(symbols have their usual meanings)
Correct : A. xv=sxxw+tx,yv=syyw+ty
39. Sutherland - Hodgman Polygon Clipping algorithm goes around the edges of the window, clipping the polygon, it encounters ____types of edges.
Correct : D. four
40. Parallel projection discards _______and parallel lines from each vertex on the object are extended until they intersect the view plane.
Correct : B. z-coordinate
41. − Cavalier and Cabinet projections are
Correct : D. oblique projections
42. In BRep (boundary representation) A solid is represented as a collection of _____surface elements, the boundary between solid and non-solid.
Correct : A. connected
43. The main topological items in boundary representation are:
Correct : A. faces, edges and vertices.
44. which of the following are simple shapes as described by constructive solid geometry
Correct : D. all of the above
45. Hidden surface problem relies on a device called
Correct : A. Z-buffer
46. The division displayed on screen into row and columns is known as
Correct : D. Grid
47. The function of a plotter is like a
Correct : C. Printer
48. A plotter is capable of
Correct : C. Both a & b
49. ______ ink is used in laserprinter
Correct : B. Dry
50. The cabinet in laser printer in which the ink is filled is called
Correct : C. Both a & b
51. An inkjet printer places_______ of ink onto paper to print an image
Correct : A. Small droplets
52. The size of these dot in inkjet printer usually lies between
Correct : A. 50 to60 microns in diameter
53. The speed of printing in inkjet printer is
Correct : B. Slow
54. The inkjet printer is mostly common due to their
Correct : C. Both a & b
55. The main property of________ is that their shape is irregular
Correct : A. Fractals
56. Which type of quad tree is specifically used to store lines rather than points
Correct : B. Edge quad tree
57. The painter algorithm are also called
Correct : C. Both a & b
58. The painter algorithm are based on the property of
Correct : B. Frame buffer
59. The dynamic effect of an image is called
Correct : B. Animation
60. The method which is based on the principle of comparing objects and parts of objects to each other to find which are visible and which are hidden are called
Correct : A. Object-space method
61. The method which is based on the principle of checking the visibility point at each pixel position on the projection plane are called
Correct : B. image-space method
62. The types of hidden surface removal algorithm are
Correct : D. All of these
63. Which surface algorithm is based on perspective depth?
Correct : B. Z-buffer or depth-buffer algorithm
64. In which year Z- buffer algorithm are described?
Correct : B. 1974
65. Z -buffer algorithm are
Correct : A. Simplest algorithm
66. Which is a tree type of data structure in which every internal node has at most four
children?
Correct : C. Quad tree
67. The surfaces that is blocked or hidden from view in a 3D scene are known as
Correct : A. Hidden surface
68. 24 The problem of hidden surface are
Correct : C. Both a & b
69. Why we need removal of hidden surface
Correct : C. Both a & b
70. How many types of hidden surface algorithm are
Correct : B. 2
71. The algorithm of hidden surface is
Correct : C. Both a & b
72. Hue of color is related to ?
Correct : D. Wavelength
73. The phenomenon of having a continuous glow of a beam on the screen even after it is
removed is called as ?
Correct : C. Phosphorescence
74. All the hidden surface algorithms employe image space approach except ?
Correct : A. Back face removal
75. Which of the following statement is true ?
Correct : A. Request, sample and event are the three basic modes of input
76. Choose the incorrect statement from the following about the basic ray tracing technique used in image synthesis ?
Correct : D. In this technique rays are cast from the light source to the object in the scene
77. The refresh rate below which a picture flickers is ?
Correct : A. 25
78. If all the pixels within an octant have the same color, it is referred to as .....................
Correct : B. Homogeneous octant
79. A structure is created using the function ........................
Correct : C. openstructure( )
80. ................... is the reference portion value of each structure element.
Correct : A. element pointer
81. ............... can be produced by interpolating shading patterns across the polygon surfaces
to eliminate or reduce the presence of polygon edge boundaries.
Correct : B. Rendering
82. If the light is propagating in a material with a ____ index of refraction than the material whose surface it strikes, then total internal reflection may occur if the angle of incidence is ____than a certain critical angle
Correct : A. higher, greater
83. The equation occurring in finding the reflected vector is
Correct : A. L’=2(N.L)N-L
84. Curves can be broadly classified into three categories – which are
Correct : A. explicit, implicit, and parametric curves.
85. Approximating curve passes as close as possible while maintaining ______degrees of
freedom
Correct : B. minimum
86. Who developed the phong shading model
Correct : B. Bui Tuong Phong
87. ka the ambient diffuse coefficient of reflection always has a value
Correct : B. between 0 and 1
88. If we assume a uniform intensity of ambient light, Ia, then the intensity of the diffuse reflection at any point on the surface: I = _______where ka=the ambient diffuse coefficient of reflection
Correct : B. ka * Ia,
89. which of the following is not a hidden surface removal algorithm
Correct : D. Sutherland cohen
90. The _________ is a geometric representation of the volume visible to the ________