CG_new

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1. _________as the most commonly used boundary presentation for a 3-D graphics object a. Data polygon b. Surface polygon c. System polygon d. None of these 2. An_______ can be considered as an extension of spherical surface a. Bezier b. Ellipsoid c. Shearing d. None of these 3. _______curve is one of the sp line approximation methods a. Bezier b. Ellipsoid c. Shearing d. None of these 4. A Bezier curve is a polynomial of degree ___________the no of control points used a. One more than b. One less than c. Two less than d. None of these 5. The most basic transformation that are applied in three-dimensional planes are a. Translation b. Scaling c. Rotation d. All of these 6. The transformation in which an object can be shifted to any coordinate position in three dimensional plane are called a. Translation b. Scaling c. Rotation d. All of these 7. The transformation in which an object can be rotated about origin as well as any arbitrary pivot point are called a. Translation b. Scaling c. Rotation d. All of these 8. The transformation in which the size of an object can be modified in x- direction ,y-direction and z-direction

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Multiple choice questions with answers on computer graphics

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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