Quiznetik

Computer Graphics | Set 6

1. What are the types of polygon___________.

Correct : C. both a & b

2. In which polygon object appears only partially________________.

Correct : B. concave polygon

3. The rectangle space in which the world definition of region is displayed are called_______________.

Correct : B. clipping window or world window

4. The process of cutting off the line which are outside the window are called__________.

Correct : C. clipping

5. The process of coloring the area of a polygon is called___________.

Correct : A. polygon filling

6. The algorithm used for filling the interior of a polygon is called____________.

Correct : A. flood fill algorithm

7. If the pixel is already filled with desired color then leaves it otherwise fills it, this is called___________.

Correct : B. boundary fill algorithm

8. The process of mapping a world window in world coordinate system to viewport are called___________.

Correct : A. transformation viewing

9. Some common form of clipping include__________.

Correct : D. all of these

10. An object can be viewed as a collection of___________.

Correct : C. several segments

11. Scaling of a polygon is done by computing____________.

Correct : D. only a

12. In the given point (x,y) and we want to access(x-1,y-1) in a single step we need to use_________.

Correct : D. 8-connected

13. Sutherland Hodgeman algorithm is used for_____________.

Correct : C. polygon clipping

14. Which of the following is true with respect to Suther Hodge algorithm?

Correct : C. it may insert extra edges in resultant polygon

15. Adjacent pixels are likely to have same characteristics. This property is referred as_______.

Correct : A. property of coherence

16. The algorithm used for filling the interior of a polygon is called

Correct : A. flood fill algorithm

17. If we want to recolor an area that is not defined within a single color boundary is known as_________.

Correct : C. flood-fill algorithm

18. A many sided figure is termed as_____.

Correct : B. polygon

19. The function of scan line polygon fill algorithm are________.

Correct : A. find intersection point of the boundary of polygon and scan line

20. If a line joining any two of its interior points lies not completely inside are called____________.

Correct : B. concave polygon

21. Which things are mainly needed to make a polygon and to enter the polygon into display file_____.

Correct : C. both a & b

22. Which approaches are used for determine whether a particular point is inside or outside of a polygon_____.

Correct : C. both a & b

23. In a given triangle, a(10, 10), B(20, 20), C(30, 10), the point P(28, 20) is______.

Correct : B. outside the triangle

24. A Pixel is represented dy a tuple Xw,Yw,w in______.

Correct : B. homogeneous coordinates system

25. If the angle Q is positive then the rotation direction will be _________.

Correct : B. anticlockwise

26. If we multiply any matrix A with identity matrix then we get the________matrix.

Correct : D. original matrix

27. Two consecutive transformation t1 and t2 are _________.

Correct : A. additive

28. Two consecutive scaling transformation t1 and t2 are __________.

Correct : C. multiplicative

29. Which of the following transformation is not used in rotation about arbitrary point in 2D?

Correct : A. scaling

30. Two consecutive rotation transformation are always__________.

Correct : A. additive

31. Reflection about X-axis followed by reflection about Y-axis is equivalent to_______.

Correct : B. reflection about origin

32. If a circle is scaled in only one direction then it will become___________.

Correct : C. ellipse

33. The result of two successive 2D rotations R(Q1) and R(Q2) is___________.

Correct : A. r(q1+q2)

34. If we take mirror reflection of a points(x,y) along the line Y=X then the point becomes________.

Correct : D. (y,x)

35. In X-shear transformation point(x,y)becomes_________.

Correct : B. (x+yb,y)

36. Shear transformation can be formed by scaling and rotation,justify True or False .

Correct : A. true

37. Which transformation needs homogeneous coordinates to represent it in Matrix from?

Correct : C. translation

38. Any 2D point in homogeneous coordinates is represented in a matix form with dimension as________.

Correct : C. 1*3

39. If we need to tilt the 2D object in one direction then we have to use_____transformation.

Correct : C. shear

40. In Scaling transformation Sx Indicate______.

Correct : A. scaling factor along x axis

41. A point x(2,3) is reprensented in homogeneous coordinates as_________.

Correct : C. (2,3,1)

42. The transformation matrix is used for__________.

Correct : C. reflection at origin

43. The transformation matrix is used for_____________.

Correct : B. y-shear

44. In 3D viewing, mismatch between 3D objects and 2D displays is compensated by introducing_________.

Correct : B. projection

45. In 3D viewing, ____________-transformation transforms the projection co-ordinates into the device coordinates.

Correct : C. workstation

46. Two Basic ways of projecting objects onto the view plane are _________ and _______- .

Correct : C. parallel, perspective

47. _____________ projection produce the realistic views but does not preserves relative proportions.

Correct : C. parallel

48. When the direction of the projection is not perpendicular to the view plane , we have an _______ parallel projection.

Correct : C. oblique

49. The foreshortening factor is the ratio of the ____________.

Correct : B. projected length of line to its true length

50. The oblique projections are classified as ______ and ___________ projections.

Correct : A. cavalier and cabinet

51. Cabinet projection appear ___________ realistic compared to cavalier projections.

Correct : A. more

52. Which of the following is not a type of perspective projection____________.

Correct : A. isometric

53. The color options are numerically coded with the following values.

Correct : A. ranging from 0 through the positive integer

54. In color raster system, the number of color choices available depends on_____________.

Correct : B. amount of storage provided per pixel in frame buffer

55. The color code “000” is for________.

Correct : B. black

56. Color information can be stored in____________.

Correct : D. frame buffer

57. binary value is placed in?

Correct : B. directly in frame buffer

58. The range that specifies the gray or grayscale levels is___________.

Correct : C. the value range from 0 to 1

59. then it displays__________.

Correct : C. dark gray color

60. RGB colors on internet applications are called___________.

Correct : D. safe web colors

61. Equation that describes hue is ___________.

Correct : C. h = h-120

62. 0 degree of red color in hue image will correspond to______________.

Correct : D. black region

63. White color in a Cartesian coordinate system can be represented as____________.

Correct : D. (1,1,1)

64. Color model is also called___________.

Correct : D. both a and b

65. The additive color models use the concept of___________.

Correct : B. light to display color

66. The subtractive color model use the concept of ____________.

Correct : A. printing ink

67. Two dimensional color model are_____________.

Correct : C. rgb and cmyk

68. RGB model are used for____________.

Correct : A. computer display

69. CMYK model are used for______________-.

Correct : B. printing

70. The intersection of three primary RGB color produces________.

Correct : A. white color

71. The intersection of primary CMYK color produces__________.

Correct : B. black color

72. CMYK.

Correct : B. larger

73. Color depth can be defined by ________ which can be displayed on a display unit.

Correct : A. bits per pixel

74. RGB true color model has _______ color depth.

Correct : A. 24bit

75. CMYK true color model has _______ color depth.

Correct : B. 32bit

76. Hue and saturation, both together produce_________.

Correct : C. chromaticity

77. Green plus blue color produces________.

Correct : D. cyan

78. Three primary colors are_________.

Correct : A. red, green, blue

79. Total amount of energy from light source is called________.

Correct : D. radiance

80. Hues opposites to each others are known as____________.

Correct : C. complements

81. Color spectrum consists of__________.

Correct : C. 7 colors

82. One that is not a color model is__________.

Correct : A. rcb

83. Intensity can be converted to color transformation by assigning colors to___________.

Correct : D. intensity levels

84. Color model used for monitors is__________.

Correct : C. rgb

85. The dynamic effect of an image is called_________.

Correct : B. animation

86. The animation can be defined as a collection of images played in______.

Correct : B. defined sequence

87. When sound is included in the animation, it become____________.

Correct : B. video

88. Many online animation tools are used to create animation in the form of___________.

Correct : C. gif image

89. The types of animation are__________.

Correct : C. both a & b

90. The types of computer animation are____________.

Correct : C. both a & b

91. In computer graphics, a graphical object is known as____________.

Correct : B. segment

92. An object can be viewed as a collection of__________.

Correct : C. several segments

93. Every segment has its own attributes like________.

Correct : D. all of these

94. By using the attributes of segment , we can________ any segment.

Correct : A. control

95. A two-dimensional array contain the details of all the segment are called________.

Correct : A. segmentation table

96. We assign all the attributes of segment under the________.

Correct : A. segment name

97. The initial size of segment will be_______.

Correct : B. 0

98. The removal of a segment with its details are called________.

Correct : B. deletion of segments

99. Deletion of any segment is much________ than creation of any new segment.

Correct : B. difficult

100. When a display file is divided into number of subparts then each part is called as____.

Correct : A. segment