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Transcript of CG_new
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1. _________as the most commonly used boundary presentation for a 3-D graphics objecta. Data polygonb. Surface polygonc. System polygond. None of these
2. An_______ can be considered as an extension of spherical surfacea. Bezierb. Ellipsoidc. Shearingd. None of these
3. _______curve is one of the sp line approximation methodsa. Bezierb. Ellipsoidc. Shearingd. None of these
4. A Bezier curve is a polynomial of degree ___________the no of control points useda. One more thanb. One less thanc. Two less thand. None of these
5. The most basic transformation that are applied in three-dimensional planes area. Translationb. Scalingc. Rotationd. All of these
6. The transformation in which an object can be shifted to any coordinate position in three dimensional plane are calleda. Translationb. Scalingc. Rotationd. All of these
7. The transformation in which an object can be rotated about origin as well as any arbitrary pivot point are calleda. Translationb. Scalingc. Rotationd. All of these
8. The transformation in which the size of an object can be modified in x-direction ,y-direction and z-directiona. Translationb. Scalingc. Rotationd. All of these
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9. The process of coloring the area of a polygon is calleda. Polygon fillingb. Polygon flowc. Aliasingd. None of these
10. If the pixel is already filled with desired color then leaves it otherwise fills it. this is called
a. Flood fill algorithmb. Boundary fill algorithmc. Scan line polygon filling algorithmd. None of these
11. Apart from the basic transformation ,________are also useda. Shearingb. Reflectionc. Both a & bd. None of these
12. In which transformation ,the shape of an object can be modified in any of direction depending upon the value assigned to thema. Reflectionb. Shearingc. Scalingd. None of these
13. In which transformation ,the mirror image of an object can be seen with respect to x-axis, y-axis ,z-axis as well as with respect to an arbitrary linea. Reflectionb. Shearingc. Translationd. None of these
14. How many types of projection area. 1b. 2c. 3d. 4
15. The types of projection area. Parallel projection and perspective projectionb. Perpendicular and perspective projectionc. Parallel projection and Perpendicular projectiond. None of these
16. How many types of parallel projection area. 1
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b. 2c. 3d. 4
17. The types of parallel projection area. Orthographic projection and quadric projectionb. Orthographic projection and oblique projectionc. oblique projection and quadric projectiond. None of these
18. _________are the three dimensional analogs of quad treesa. Quadricb. Octreesc. Geometryd. None of these
19. By which more complex objects can be constructeda. Quadric surfacesb. Wire frame modelc. Composite transformationd. None of these
20. _______refers to the common elements of graphics scenes ,often used in graphics package as primitive componentsa. Quadric surfacesb. Wire frame modelc. Composite transformationd. None of these
21. _________refer to the shapes created by union, intersection and difference of given shapesa. Wire frame modelb. Composite transformationc. Constructive solid geometry methodsd. None of these
22. ________refer to a model that represent all the dimension of an object external as well as internala. Wire frame modelb. Constructive solid geometry methodsc. Composite transformationd. None of these
23. ________refers to the result obtained by multiplying the matrix of the individual transformation representation sequencesa. Wire frame modelb. Constructive solid geometry methodsc. Composite transformationd. None of these
24. The projection in which the projection plane is allowed to intersect the x, y and z-axes at equal distancesa. Wire frame model
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b. Constructive solid geometry methodsc. Isometric projectiond. Back face removal
25. In which projection ,the plane normal to the projection has equal angles with these three axesa. Wire frame modelb. Constructive solid geometry methodsc. Isometric projectiond. Back face removal
26. ___________is a simple object space algorithm that removes about half of the total polygon in an image as about half of the faces of objects are back faces
a. Wire frame modelb. Constructive solid geometry methodsc. Isometric projectiond. Back face removal
27. By which ,we can take a view of an object from different directions and different distances a. Projectionb. Rotationc. Translationd. Scaling
28. Parallel projection shows thea. True image of an objectb. True dimension of an objectc. True shape of an objectd. all of these
29. Projection rays(projectors) emanate from aa. COP(centre of projection )b. Intersect projection planec. Both a & bd. None of these
30. The centre of projection for parallel projectors is ata. Zerob. Infinityc. Oned. None of these
31. In orthographic projection, engineering usea. Top view of an objectb. Front view of an objectc. Side view of an objectd. All of these
32. The orthographic projection that show more than one side of an object are calleda. Axonometric projectionb. Isometric projection
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c. Both a & bd. None of these
33. The projection that can be viewed as the projection that has a centre of projection at a finite distance from the plane of projection are called
a. Parallel projectionb. Perspective projectionc. Isometric projectiond. None of these
34. The perspective projection is more practical because the distant objects appeara. Smallerb. Largerc. Neither smaller nor largerd. None of these
35. The equation of scaling transformation will bea. X1=x+Tx,y1=y+Ty,z1=z+Tzb. X1=x.sx,y1=y.sy,z1=z.szc. Both of thesed. None of these
36. The equation of translation transformation will bea. X1=x+Tx,y1=y+Ty,z1=z+Tzb. X1=x.sx,y1=y.sy,z1=z.szc. Both of thesed. None of these
37. Sp line curve can be eithera. Bezier sp lineb. B sp linec. Both a & bd. None of these
38. Bezier sp line always passes througha. First and second control pointb. Does not pass from First and second control pointc. Both a & bd. None of these
39. The equation for describing surface of 3D plane area. Ax+ By+ Cz+ D= 0b. Ax+ By+ Cz = 0c. Ax+ By+ D= 0d. Ax+ By+ Cz+ D= 1
40. The object refers to the 3D representation through linear, circular or some other representation are calleda. Quadric surfaceb. Sweep representationc. Torus
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d. None of these41. The distance of a line from the projection plane determines
a. Its size on projection planeb. Its length on projection planec. Its width on projection planed. Its height on projection plane
42. The further the line from the projection plane, _______its image on the projection planea. Smallerb. Largerc. Neither smaller nor largerd. None of these
43. The Bezier curve obtained from the four control points is called aa. Square Bezier curveb. Cubic Bezier curvec. Hectare Bezier curved. Rectangle Bezier curve
44. The shape of a Bezier curve primarily depends upon thea. Position of control pointsb. Distance of control pointsc. Position of control paneld. None of these
45. The no of control points in a Bezier curve ensures thea. Jaggies of curveb. Smoothness of curvec. Straightness of curved. None of these
46. More the control points of a Bezier curve,________ quality of the curvea. Higherb. Lowerc. Badd. None of these
47. ______is one of the function that is used to specify a single plane surfacea. Meta-ball modelb. Fill areac. Reflectiond. None of these
48. Meta-ball is used to describea. Simplest objectb. Complex objectc. Composite objectd. None of these
49. Super quadrics is a class of object that contain
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a. Datab. Codesc. Both a & bd. None of these
50. When two molecules move apart, which effect on molecular shapesa. Stretchingb. Snappingc. Contractingd. All of these
51. The sweep representation of an object refers to thea. 2D representationb. 3D representationc. Both a & bd. None of these
52.The space in which the image is displayed are called
a. Screen coordinate systemb. Clipping windowc. World coordinate systemd. None of these
53. The rectangle space in which the world definition of region is displayed are called
a. Screen coordinate systemb. Clipping window or world windowc. World coordinate systemd. None of these
54. The object space in which the application model is defined
a. Screen coordinate systemb. Clipping window or world windowc. World coordinate systemd. None of these
55. The process of cutting off the line which are outside the window are called
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a. Shearb. Reflectionc. Clippingd. Clipping window
56. Some common form of clipping include
a. curve clippingb. point clippingc. polygon clippingd. All of these
57. A composite transformation matrix can be made by determining the ________of matrix of the individual transformation
a. Additionb. Subtractionc. Productd. None of these
58. Each successive transformation matrix _________ the product of the preceding transformation
a. pre-multiplesb. post-multiplesc. both a & bd. none of these
59. Forming products of transformation matrices is often referred as
a. Composition of matrixb. Concatenation of matrixc. Both a & b are samed. None of these
60. The alteration of the original shape of an object, image, sound, waveform or other form of information are called
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a. Reflectionb. Distortionc. Rotationd. None of these
61. Two consecutive translation transformation t1 and t2 are
a. Additiveb. Subtractivec. Multiplicatived. None of these
62.T wo consecutive rotation transformation t1 and t2 are
a. Additiveb. Subtractivec. Multiplicatived. None of these
63. Two consecutive scaling transformation t1 and t2 are
a. Additiveb. Subtractivec. Multiplicatived. None of these