Quiznetik

Computer Graphics | Set 3

1. _________ is repositioning of an object along a circular path.

Correct : A. rotation

2. To perform Rotation we require __________ and _____________.

Correct : C. pivot point. rotation angle

3. __________ rotation denotes positive value of rotation angle.

Correct : B. counterclockwise

4. __________ values of rotation angle represents clockwise rotation.

Correct : C. negative

5. ________ is point about which rotation takes place.

Correct : C. pivot point

6. . ___________ is an angle through which rotation takes place.

Correct : A. rotation angle

7. Rotation about origin is ________ in nature.

Correct : C. commutative

8. Rotation other than origin is called as rotation about ___________.

Correct : A. pivot point

9. __________ steps are required to perform rotation about arbitary point.

Correct : C. 3

10. __________ is transformation carried out one after another

Correct : C. composite

11. _______ transformation changes size of an object.

Correct : D. scaling

12. Scaling factor_____ scales object in X direction.

Correct : B. sx

13. Scaling factor_____ scales object in Y direction.

Correct : A. sy

14. Values less than of scaling factor _________ size of object.

Correct : D. reduce

15. Values greater than one ______ object.

Correct : A. enlarge

16. In ________ scaling values of sx and sy are same.

Correct : B. uniform

17. In differential scaling values of sx and sy are ________.

Correct : B. different

18. For scaling factors we can use _____________ values.

Correct : D. any

19. Scaling is __________ in nature.

Correct : A. commutative

20. Two successive rotations are ______ in nature.

Correct : A. commutative

21. _________Coordinate system allows us to express all transformation as matrix multiplication

Correct : A. homogeneous

22. The Homogeneous Coordinate is represented by _____________.

Correct : B. triplet

23. The Homogeneous Coordinate of point (X,Y) is represented by _____________.

Correct : C. (xw,yw,w)

24. Homogeneous coordinate allows you to ___________.

Correct : D. all of these

25. Reflection transformation produce ______ image of an object.

Correct : A. mirror

26. Shear___________ shape of an object

Correct : A. slants

27. There are_____ types of shear transformation

Correct : B. 2

28. ________ preserves Y coordinate.

Correct : C. x-shar

29. Y-shear Preserves ________ coordinate.

Correct : A. x

30. In X-shear _________ line tilts to right or left.

Correct : C. vertical

31. In Y shear for horizontal line __________ changes.

Correct : D. slope

32. Shear Transformation may be expresses in terms of ___________ and _____________.

Correct : B. rotation, scaling

33. In 3D geometry we Require _________ axis

Correct : C. 3

34. Z axis corresponds to _________.

Correct : C. depth

35. In parallel Projection __________ Coordinate is discarded

Correct : A. z

36. Parallel projections ________ relative proportions of object

Correct : B. preerves

37. Parallel projections does not produce _________ views.

Correct : C. realistic

38. In perspective projections lines of projections are ______________.

Correct : D. not parallel

39. Perspective projections produce _________ views

Correct : B. realistic

40. In perspective projections all projections are converge at a single point called as _____________________.

Correct : D. center of projections

41. In Depth Cuing parts of objects closest to viewing position are displayed with _________ intensities.

Correct : A. heighest

42. In projections non visible lines are represented as __________lines

Correct : C. dash

43. stereoscopic devices present ________ views of scene

Correct : A. 2

44. There are ________ Types of parallel projections

Correct : C. 2

45. _____________ is a type of Parallel projection

Correct : A. orthographic

46. Oblique is a type of ________ projections

Correct : C. parallel

47. In orthographic projections projection plane is _________ to a principle axis

Correct : A. perpendicular

48. The oblique projections are classified as ___________ and _____________.

Correct : C. cavalier ,cabinet

49. 3D clipping uses _________ region code.

Correct : B. 6-bit

50. In 3D clipping bit s of region code has value _________ if end point is in front of volume

Correct : B. 1

51. In 3D clipping bit 6 of region code has value _________ if end point is in behind of volume

Correct : A. 1

52. Concept of window in 2D can be extended to ________________ a in 3D Clipping.

Correct : D. view volume

53. Values less than of scaling factor _________ size of object

Correct : D. reduce

54. In 3D clipping we perform logical ______ operation.

Correct : D. and

55. Basic geometric transformation include _________.

Correct : D. all of these

56. Some additional transformation are __________

Correct : C. both a & b

57. The transformation in which an object is moved in a minimum distance path from one position to another is called

Correct : C. rotation

58. The transformation in which an object is moved from one position to another in circular path around a specified pivot point is called _____________

Correct : C. rotation

59. The transformation in which the dimension of an object are changed relative to a specified fixed point is called

Correct : B. scaling

60. The selection and separation of a part of text or image for further operation are called ___________.

Correct : D. clipping

61. The complex graphics operations are _____________

Correct : C. clipping

62. The transformation that produces a parallel mirror image of an object are called __________.

Correct : A. reflection

63. The transformation that disturbs the shape of an object are called __________

Correct : B. shear

64. The process of mapping a world window in world coordinate system to viewport are called __________

Correct : A. transformation viewing

65. In which transformation the shape of an object can be modified in x-direction ,y-direction as well as in both the direction depending upon the value assigned to shearing variables ___________

Correct : B. shearing

66. The process of extracting a portion of a database or a picture inside or outside a specified region are called

Correct : D. clipping

67. The rectangle portion of the interface window that defines where the image will actually appear are called

Correct : B. view port

68. The space in which the image is displayed are called __________________

Correct : A. screen coordinate system

69. The rectangle space in which the world definition of region is displayed are called ________________

Correct : B. clipping window or world window

70. The object space in which the application model is defined _____________

Correct : C. world coordinate system

71. The process of cutting off the line which are outside the window are called _____________

Correct : C. clipping

72. Some common form of clipping include ___________

Correct : D. all of these

73. Each successive transformation matrix _________ the product of the preceding transformation

Correct : A. pre-multiples

74. Forming products of transformation matrices is often referred as __________.

Correct : C. both a & b are same

75. The alteration of the original shape of an object, image, sound, waveform or other form of information are called ___________.

Correct : B. distortion

76. Two consecutive translation transformation t1 and t2 are _____________

Correct : A. additive

77. Two consecutive rotation transformation R1 and R2 are _______________

Correct : A. additive

78. Two consecutive scaling transformation S1 andSt2 are _______________

Correct : C. multiplicative

79. The most basic transformation that are applied in three-dimensional planes are _____________

Correct : D. all of these

80. The transformation in which an object can be shifted to any coordinate position in three dimensional plane are called _____________.

Correct : C. rotation

81. The transformation in which an object can be rotated about origin as well as any arbitrary pivot point are called __________________.

Correct : C. rotation

82. The transformation in which the size of an object can be modified in x-direction ,y-direction and z-direction _____________

Correct : B. scaling

83. Apart from the basic transformation ,________are also used

Correct : C. both a & b

84. In which transformation ,the shape of an object can be modified in any of direction depending upon the value assigned to them ______________

Correct : B. shearing

85. 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 line ______________.

Correct : A. reflection

86. How many types of projection are ______.

Correct : B. 2

87. The types of projection are _______________.

Correct : A. parallel projection and perspective projection

88. How many types of parallel projection are ______________.

Correct : B. 2

89. The types of parallel projection are _______________.

Correct : B. orthographic projection and oblique projection

90. By __________ more complex objects can be constructed.

Correct : B. wire frame model

91. _______refers to the common elements of graphics scenes ,often used in graphics

Correct : A. quadric surfaces

92. ________refers to the result obtained by multiplying the matrix of the individual transformation representation sequences.

Correct : C. composite transformation

93. The projection in which the projection plane is allowed to intersect the x, y and z-axes at equal distances ___________________.

Correct : C. isometric projection

94. In which projection , the plane normal to the projection has equal angles with these three axes ____________________.

Correct : C. isometric projection

95. By which ,we can take a view of an object from different directions and different distances ______________.

Correct : A. projection

96. Parallel projection shows the ______________.

Correct : D. all of these

97. Projection rays(projectors) emanate from a _______________.

Correct : C. both a and b

98. The centre of projection for parallel projectors is at _____________.

Correct : B. infinity

99. In orthographic projection, engineering use ___________.

Correct : D. all of these

100. The orthographic projection that show more than one side of an object are called _______________.

Correct : C. both a & b