MCQ s for Computer Graphics and Gaming Unit 3 and Unit 4

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6 In a clipping algorithm of Cohen Sutherland using region codes a line is already clipped if the. A codes of the end point are same,B logical AND of the end point code is not 0000. C logical AND of the end point code is 0000, 7 The subcategories of orthographic projection are. A cavalier cabinet isometric,B cavalier cabinet,C isometric dimetric trimetric. D isometric cavalier trimetric, 8 Which of the following clipping algorithm follows the Divide and Conquer strategy. A 4 bit algorithm,B Midpoint algorithm,C Cyrus break algorithm.
D Cohen Sutherland algorithm,9 A line with endpoints codes as 0000 and 0100 is. A Partially invisible,B Completely visible,C Completely invisible. D Trivially invisible, 10 Obliquee projection with an angle of 450 to the horizontal plane is called as. A Cabinet projection,B Isometric projection,C Cavalier projection. D None of these, Explanation Oblique projection is a simple type of graphical projection used for producing pictorial.
two dimensional images of three dimensional objects. 11 Find the incorrect statement, A A perspective projection produces realistic views. B A perspective projection preserves realistic dimensions. C A parallel projection gives realistic representation of 3 D objects. D Both B and C above, 12 The perspective anomaly in which the object behind the center of projection is projected upside. down and backward onto the view plane is called,A Perspective foreshortening. B Vanishing view,C View Confusion,D Topological distortion. 13 There are 2 types of polygons They are,A convex and concave.
B squire and rectangle,C hexagon and squire,D octagon and convex. 14 A polygon in which the line segment joining any 2 points within the polygon lies completely inside. the polygon is called,A convex polygon,B concave polygon. C both a and b,D convert ploygon, 15 A polygon in which the line segment joining any 2 points within the polygon may not lie completely. inside the polygon is called,A convex polygon,B concave polygon. C both a and b,D convert polygon,16 Rectangular patterns are sometimes referred as.
A Tiling patterns,B Filling patterns,C coloring patterns. D both a and b,17 Replicating pixels is one of the methods of. A Thick primitives,B Thin Primitives,C Stylish Primitives. D Both A and B, 18 The process of selecting and viewing the picture with different views is called. A Windowing,B Clipping,C Projecting,D Both A and B.
19 The process which divides each element of the picture into its visible and invisible portions allowing. the invisible portion to be discarded is called,A Windowing. B Clipping,C Projecting,D Both A and B, 20 The region against which an object is to be clipped is called. A Clip window or clipping window,B Drawing window,C Image window. D Both B and C,21 The region code 0000 represents the. A Viewing window,B Left clipping window,C Right clipping window.
D Bottom clipping window, 22 A method used to test lines for total clipping is equivalent to the. A Logical XOR operator,B Logical OR operator,C Logical AND operator. D Both A and B, 23 A process of changing the position of an object in a straight line path from one coordinates location. to another is called,A Translation,B Rotation,D Both B and C. 24 A two dimensional rotation is applied to an object by repositioning it along a. A Circular path in the x y plane,B Straight path in the x y plane.
C Diagonals path in the x y plane,D Upward in the x y plane. 25 A scaling transformation changes the of an object. B location,D Both A and B,26 Given matrix 1000000yxSSS represents the. A Homogeneous Coordinates for rotation,B Homogeneous Coordinates for translation. C Homogeneous Coordinates for Scaling, D Homogeneous Coordinates for both rotation and scaling. 27 In two dimensional viewing we have,A 3D window and 2D viewport.
B 3D window and 3D viewport,C 2D window and 2D viewport. D both A and B, 28 The first viewing parameter we must consider is the. A Viewing window,B Shift vector,C View reference point. D View reference plane, 29 The line segment from the view plane to the view reference point is called. A View distance,B Projection distance,C View path,D both A and B.
30 In perspective projection the lines of projection are not parallel Instead they all coverage at a. single point called,A Center point,B Projection reference point. C Center of projection or projection reference point. D interaction point, 31 When the projection is obtained by projecting points along parallel lines that are not perpendicular. to the projection plane is called,A isometric projection. B perspective projection,C oblique projection,D cavalier projection. 32 The transformation that produces a mirror image of an object relative to an axis is called. A rotation,B translation,C reflection,D both A and B.
33 A transformation that slants the shape of objects is called the. A Shear transformation,B translation,C reflection,D both A and B. 34 Sometimes it may require undoing the applied transformation in such a case which of the following. transformation will be used,A Shear transformation. B translation,C reflection,D inverse transformation. 35 After completion of scanning of one line the electron beam files back to the start of next line this. process is known as,A Horizontal retrace,B Vertical retrace. C interleaving,D both A and B, 36 If the boundary is specified in a single color and if the algorithm proceeds pixel by pixel until the.
boundary color is encountered is called,A Scan line fill algorithm. B Boundary fill algorithm,C Flood fill algorithm,D Parallel curve algorithm. Explanation This algorithm proceeds outward pixel by pixel until the boundary color is encountered. 37 If we want to recolor an area that is not defined within a single color boundary is known as. A Boundary fill algorithm,B Parallel curve algorithm. C Flood fill algorithm, Explanation We can paint such areas by replacing a specified interior color. 38 A three dimensional graphics has,A Two axes,B Three axes.
C Both a b,D None of these, 39 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. 40 A three dimensional object can also be represented using. B Equation,D None of these, 41 the most basic transformation that are applied in three dimensional planes are. A Translation,C Rotation,D All of these, 42 The transformation in which an object can be shifted to any coordinate position in three. dimensional plane are called,A Translation,C Rotation.
D All of these, 43 The transformation in which an object can be rotated about origin as well as any arbitrary pivot. point are called,A Translation,C Rotation,D All of these. 44 The transformation in which the size of an object can be modified in x direction y direction and z. A Translation,C Rotation,D All of these, 45 Apart from the basic transformation are also used. A Shearing,B Reflection,C Both a b,D None of these. 46 In which transformation the shape of an object can be modified in any of direction depending upon. the value assigned to them,A Reflection,B Shearing.
D None of these, 47 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,A Reflection. B Shearing,C Translation,D None of these,48 How many types of projections are available. 49 The types of projection are,A Parallel projection and perspective projection. B Perpendicular and perspective projection, C Parallel projection and Perpendicular projection.
D None of these, 50 How many types of parallel projection are available. 51 The types of parallel projection are,A Orthographic projection and quadric projection. B Orthographic projection and oblique projection,C oblique projection and quadric projection. D None of these, 52 The projection in which the projection plane is allowed to intersect the x y and z axes at equal. A Wire frame model,B Constructive solid geometry methods.
C Isometric projection,D Back face removal, 53 In which projection the plane normal to the projection has equal angles with these three axes. A Wire frame model,B Constructive solid geometry methods. C Isometric projection,D Back face removal, 54 By which we can take a view of an object from different directions and different distances. A Projection,B Rotation,C Translation,55 Parallel projection shows the. A True image of an object,B True size of an object.
C True shape of an object,D all of these,56 Projection rays projectors emanate from a. A COP centre of projection,B Intersect projection plane. C Both a b,D None of these, 57 The centre of projection for parallel projectors is at. B Infinity,D None of these,58 In orthographic projection engineering use. A Top view of an object,B Front view of an object,C Side view of an object.
D All of these, 59 The orthographic projection that show more than one side of an object are called. A Axonometric projection,B Isometric projection,C Both a b. D None of these, 60 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 projection. B Perspective projection,C Isometric projection,D None of these.
61 The perspective projection is more practical because the distant objects appear. C Neither smaller nor larger,D None of these, 62 The equation of scaling in 3D transformation will be. A x x Tx y y Ty z z Tz,B x x sx y y sy z z sz,C Both of these. D None of these, 63 The equation of translation in 3D transformation will be. A X x Tx y y Ty z z Tz,B X x sx y y sy z z sz,C Both of these. D None of these, 64 The equation for describing surface of 3D plane is.
A Ax By Cz D 0,B Ax By Cz 0,C Ax By D 0,D Ax By Cz D 1. 65 The object refers to the 3D representation through linear circular or some other representation are. A Quadric surface,B Sweep representation,D None of these. 66 The distance of a line from the projection plane determines. A Its size on projection plane,B Its length on projection plane. C Its width on projection plane,D Its height on projection plane. 67 If line is far away from the projection plane is its image on the projection plane. C Neither smaller nor larger,D None of these, 68 The sweep representation of an object refers to the.
A 2D representation,B 3D representation,C Both a b. D None of these, 69 The area of computer that is captured by an application is called. B View port,D None of these, 70 The scan line coherence algorithm was developed by. C Cat mull,D Both a b, 71 The array are used with scan line coherence algorithm are. A For intensity value,B For depth value,C Both a b.
D None of these,72 Scan lines are used to scan from. A Top to bottom,B Bottom to top,C Both a b,D None of these. 73 A fast and simple method for rendering an object with polygon surface is. A Constant intensity shading,B Flat shading,C Both a b. D None of these, 74 The selection and separation of a part of text or image for further operation are called. A Translation,C Reflection,D Clipping,75 The complex graphics operations are.
A Selection,B Separation,C Clipping,D None of these. 76 Which attributes of image transformation change the size of an image corresponding to the x axis. and y axis,C Both a b,D None of these, 77 Which attributes of image transformation change the position of image corresponding to the x. axis and y axis,A TRANSLATE X,B TRANSLATE Y,C Both a b. D None of these, 78 Which attributes of image transformation rotate the image by a given angle. A ROTATE X,B ROTATE Y,C Both a b,D None of these,79 A many sided figure is termed as.
C Rectangle,80 The end point of polygon are called as. B Vertices,D None of these,81 The line segment of polygon are called as. MCQ s for Computer A Clipping against the window and then applying the window transformation B Applying window transformation and then clipping against the viewport C Both A and B have the same efficiency D Efficiency depends on whether the window is an aligned rectangle or not Answer D Marks 1 Unit 3 2 Reflection of a point about x axis followed by a counter clockwise rotation

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