McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Master of Computer Applications (MCA) .
Chapters
| 1. |
How many basic method of projection |
| A. | Four |
| B. | Two |
| C. | More than three |
| D. | One |
| Answer» B. Two | |
| 2. |
Lines of projection coverage at a single point called |
| A. | Centre of attraction |
| B. | Centre of projection |
| C. | Line of projection |
| D. | None |
| Answer» B. Centre of projection | |
| 3. |
Select the perspective anomalies from the following: |
| A. | Perspective foreshortening |
| B. | Perspective increasing |
| C. | Centre of projection |
| D. | Vanishing point |
| Answer» A. Perspective foreshortening | |
| 4. |
Difference between parallel and perspective projection lies in the |
| A. | Centre of attraction |
| B. | Centre of projection |
| C. | Line of control |
| D. | None |
| Answer» B. Centre of projection | |
| 5. |
The operation that is used for repositioned the object are called |
| A. | Rubber band method |
| B. | Gravity field |
| C. | Dragging |
| D. | None of these |
| Answer» C. Dragging | |
| 6. |
Which method are used to construct and position the straight lines, arcs and circles, etc |
| A. | Rubber band method |
| B. | Gravity field |
| C. | Dragging |
| D. | None of these |
| Answer» A. Rubber band method | |
| 7. |
Which are used to connect a line to already drawn line |
| A. | Rubber band method |
| B. | Gravity field |
| C. | Dragging |
| D. | None of these |
| Answer» B. Gravity field | |
| 8. |
The rubber band is also applicable to_______ objects |
| A. | Scale |
| B. | Vector |
| C. | Scalar |
| D. | None of these |
| Answer» A. Scale | |
| 9. |
Which technique depends on viewer ability to reconstruct the scene from Multiple projections. |
| A. | Parallel projection |
| B. | Perspective Projection |
| C. | Intensity Rate |
| D. | None |
| Answer» A. Parallel projection | |
| 10. |
Which of the following does NOT figure into the Field of View of a pinhole camera? |
| A. | The direction of projection |
| B. | The distance from the center of projection to the projection plane |
| C. | The size of the projection plane |
| D. | None |
| Answer» A. The direction of projection | |
| 11. |
This projection technique has the direction of projection perpendicular to the viewing plane, but the viewing direction is NOT perpendicular to one of the principle faces. |
| A. | Orthographic Parallel Projection |
| B. | Axonometric Parallel Projection |
| C. | Oblique Parallel Projection |
| D. | None |
| Answer» B. Axonometric Parallel Projection | |
| 12. |
This projection technique does NOT have the direction of projection perpendicular to the viewing plane. |
| A. | Orthographic Parallel Projection |
| B. | Axonometric Parallel Projection |
| C. | Oblique Parallel Projection |
| D. | None |
| Answer» C. Oblique Parallel Projection | |
| 13. |
This projection technique has the direction of projection perpendicular to the viewing plane, and the viewing direction is perpendicular to one of the principle faces. |
| A. | Orthographic Parallel Projection |
| B. | Axonometric Parallel Projection |
| C. | Oblique Parallel Projection |
| D. | none |
| Answer» A. Orthographic Parallel Projection | |
| 14. |
When transforming a random Axis-Aligned Bounding Box defined by the points (nearx, neary, nearz) and (farx, fary, farz) to the standard orthographic viewing box, which affine transforms are used? |
| A. | shear and translation |
| B. | rotation and scale |
| C. | scale and shear |
| D. | translation and scale |
| Answer» D. translation and scale | |
| 15. |
The purpose of the front and back clipping planes in OpenGL. Which of the following was NOT a purpose for using clipping planes? |
| A. | division by zero |
| B. | objects behind the center of projection mapping onto the projection plane |
| C. | avoiding the problems of infinite viewing volume size |
| D. | none |
| Answer» C. avoiding the problems of infinite viewing volume size | |
| 16. |
Oblique projection with an angle of 45 to the horizontal plane is called as: |
| A. | Cabinet projection |
| B. | Isometric projection |
| C. | Cavalier projection |
| D. | None |
| Answer» C. Cavalier projection | |
| 17. |
The transformation in which an object is moved in a minimum distance path from one position to another is called |
| A. | Rotation |
| B. | Replacement |
| C. | Translation |
| D. | Scaling |
| Answer» C. Translation | |
| 18. |
The transformation in which an object is moved from one position to another in circular path around a specified pivot point is called |
| A. | Rotation |
| B. | Translation |
| C. | Scaling |
| D. | None |
| Answer» A. Rotation | |
| 19. |
A circle, if scaled only in one direction becomes a ? |
| A. | Ellipse |
| B. | Parabola |
| C. | Hyperbola |
| D. | None |
| Answer» A. Ellipse | |
| 20. |
The object refers to the 3D representation through linear, circular or some other representation are called |
| A. | Quadric surface |
| B. | Sweep representation |
| C. | Torus |
| D. | None of these |
| Answer» B. Sweep representation | |
| 21. |
A quad-tree is a data structure which is used for graphical representation of..................... |
| A. | 2D digital picture or object |
| B. | 3D picture or object |
| C. | Both a & b |
| D. | None of these |
| Answer» A. 2D digital picture or object | |
| 22. |
How many data elements for each region in quad-tree data structure |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 6 |
| Answer» B. 4 | |
| 23. |
............... refer to the shapes created by union, intersection and difference of given shapes |
| A. | Wire frame model |
| B. | Composite transformation |
| C. | Constructive solid geometry methods |
| D. | None |
| Answer» C. Constructive solid geometry methods | |
| 24. |
An octree is a data structure which is used for alternative representation of .................... |
| A. | 2D digital picture or object |
| B. | 3D picture or object |
| C. | Both a & b |
| D. | None of these |
| Answer» B. 3D picture or object | |
| 25. |
The text clipping strategy to reject an entire character string that overlaps a clip window is called................ |
| A. | All-or-none character clipping |
| B. | All-or-none string clipping |
| C. | Curve clipping |
| D. | both a & b |
| Answer» B. All-or-none string clipping | |
| 26. |
A transformation that slants the shape of an object is called .................... |
| A. | Reflection |
| B. | Shear |
| C. | Distortion |
| D. | Scaling |
| Answer» B. Shear | |
| 27. |
A method used to test lines for total clipping is equivalent to the ............. |
| A. | logical XOR |
| B. | logical OR |
| C. | logical AND |
| D. | both a & b |
| Answer» C. logical AND | |
| 28. |
The phenomenon of having a continuous glow of a beam on the screen even after it is removed is called as? |
| A. | Fluorescence |
| B. | Persistence |
| C. | Phosphorescence |
| D. | Incandescence |
| Answer» C. Phosphorescence | |
| 29. |
The region against which an object is clipped is called a .............. |
| A. | Clip window |
| B. | Boundary |
| C. | Enclosing rectangle |
| D. | Clip square |
| Answer» A. Clip window | |
| 30. |
Identify line clipping algorithms from the following |
| A. | Cohen- Sutherland algorithm |
| B. | Liang-Barsky clipping |
| C. | Nicholl-Lee-Nicholl clipping |
| D. | All of the above |
| Answer» D. All of the above | |
| 31. |
The process of mapping a world window in world coordinate system to viewport are called |
| A. | Transformation viewing |
| B. | Viewport |
| C. | Clipping window |
| D. | Screen coordinate system |
| Answer» A. Transformation viewing | |
| 32. |
The process of extracting a portion of a database or a picture inside or outside a specified region are called |
| A. | Transformation |
| B. | Projection |
| C. | Clipping |
| D. | Mapping |
| Answer» C. Clipping | |
| 33. |
The rectangle portion of the interface window that defines where the image will actually appear are called |
| A. | Transformation viewing |
| B. | View port |
| C. | Clipping window |
| D. | Screen coordinate system |
| Answer» B. View port | |
| 34. |
The phenomenon of having a continuous glow of a beam on the screen even after it is removed is called as ? |
| A. | Fluorescence |
| B. | Persistence |
| C. | Phosphorescence |
| D. | Incandescence |
| Answer» C. Phosphorescence | |
| 35. |
Coordinates of window are knows as .............. |
| A. | Screen coordinates |
| B. | World coordinates |
| C. | Device coordinates |
| D. | Cartesian coordinates |
| Answer» B. World coordinates | |
| 36. |
Coordinates of viewport are known as ............ |
| A. | World coordinates |
| B. | Polar coordinates |
| C. | Screen coordinates |
| D. | Cartesian coordinates |
| Answer» C. Screen coordinates | |
| 37. |
............. identifies the picture portions that are exterior to the clip window |
| A. | Interior clipping |
| B. | Exterior clipping |
| C. | Extraction |
| D. | None of the above |
| Answer» B. Exterior clipping | |
| 38. |
The region code of a point within the window is ............ |
| A. | 1111 |
| B. | 0000 |
| C. | 1000 |
| D. | 0001 |
| Answer» B. 0000 | |
| 39. |
A line with endpoints codes as 0000 and 0100 is |
| A. | Partially invisible |
| B. | Completely visible |
| C. | Completely invisible |
| D. | Trivially invisible |
| Answer» A. Partially invisible | |
| 40. |
If the object uses the golden mean in its distances from the viewer, its perspective will have a golden mean proportion to the |
| A. | front corner |
| B. | back corner |
| C. | height |
| D. | height*mean |
| Answer» B. back corner | |
| 41. |
Find the odd one out |
| A. | World Coordinate System |
| B. | Screen Coordinate System |
| C. | World Window |
| D. | None of these |
| Answer» D. None of these | |
| 42. |
Which of the following is the equation involved in window to viewport mapping(symbols have their usual meanings) |
| A. | xv=sxxw+tx,yv=syyw+ty |
| B. | xv=sxxw-tx,yv=syyw-ty |
| C. | xv+sxxw=tx,yv+syyw=ty |
| D. | xv=sxxw*tx,yv=syyw*ty |
| Answer» A. xv=sxxw+tx,yv=syyw+ty | |
| 43. |
Sutherland - Hodgman Polygon Clipping algorithm goes around the edges of the window, clipping the polygon, it encounters ____types of edges. |
| A. | one |
| B. | two |
| C. | three |
| D. | four |
| Answer» D. four | |
| 44. |
Parallel projection discards _______and parallel lines from each vertex on the object are extended until they intersect the view plane. |
| A. | x-coordinate |
| B. | z-coordinate |
| C. | y- coordinate |
| D. | xyz coordinate |
| Answer» B. z-coordinate | |
| 45. |
− Cavalier and Cabinet projections are |
| A. | Orthographic Projection |
| B. | Perspective Projection |
| C. | Isometric Projection |
| D. | oblique projections |
| Answer» D. oblique projections | |
| 46. |
In BRep (boundary representation) A solid is represented as a collection of _____surface elements, the boundary between solid and non-solid. |
| A. | connected |
| B. | disconnected |
| C. | parallel |
| D. | perpendicular |
| Answer» A. connected | |
| 47. |
The main topological items in boundary representation are: |
| A. | faces, edges and vertices. |
| B. | faces,graphs,edges |
| C. | edges,graphs,points |
| D. | faces,edges ,points |
| Answer» A. faces, edges and vertices. | |
| 48. |
which of the following are simple shapes as described by constructive solid geometry |
| A. | cuboids, |
| B. | cylinders, |
| C. | prisms, |
| D. | all of the above |
| Answer» D. all of the above | |
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