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. |
We need to represent curves & surfaces when |
| A. | We want to model existing objects |
| B. | While modeling from scratch |
| C. | Both a & b |
| D. | None of the above |
| Answer» C. Both a & b | |
| 2. |
The representations for surface modeling include. |
| A. | Polygon mesh |
| B. | Parametric surfaces |
| C. | Quadric surfaces |
| D. | All of the above |
| Answer» D. All of the above | |
| 3. |
Quadric surfaces are defined by equation |
| A. | f(x,y,z) = 0 |
| B. | f(x) = 0 |
| C. | f(y) = 0 |
| D. | f(z) = 0 |
| Answer» A. f(x,y,z) = 0 | |
| 4. |
In explicit representation each polygon is represented by list of |
| A. | Vertex coordinates |
| B. | Edge coordinates |
| C. | Vertex and Edge both |
| D. | None of the above |
| Answer» A. Vertex coordinates | |
| 5. |
In pointers to vertex list |
| A. | Each vertex is stored once |
| B. | Each vertex is stored twice |
| C. | Vertex is not stored |
| D. | Edges are stored |
| Answer» A. Each vertex is stored once | |
| 6. |
In case of explict functions the functions are equal to |
| A. | y = f(x) |
| B. | z = g(x) |
| C. | None of the above |
| D. | Both a & b |
| Answer» D. Both a & b | |
| 7. |
The value of x,y,z in case of parametric representation of curves is |
| A. | x(t) |
| B. | y(t) |
| C. | z(t) |
| D. | All of the above |
| Answer» D. All of the above | |
| 8. |
The parameter t ranges from |
| A. | 1 to 0 |
| B. | 0 to 1 |
| C. | 0 to ∞ |
| D. | ∞ to 0 |
| Answer» B. 0 to 1 | |
| 9. |
If two curve segments join together the curve has |
| A. | G 1 continuity |
| B. | G 0 continuity |
| C. | G 2 continuity |
| D. | G 3 continuity |
| Answer» B. G 0 continuity | |
| 10. |
If tangent vectors of two cubic curve segments are equal the curve has |
| A. | C 1 continuity |
| B. | C 0 continuity |
| C. | C 2 continuity |
| D. | None of the above |
| Answer» A. C 1 continuity | |
| 11. |
A joystick is a |
| A. | Graphics input device |
| B. | Graphics output device |
| C. | Both a & b |
| D. | None of these |
| Answer» A. Graphics input device | |
| 12. |
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 |
| Answer» B. One less than | |
| 13. |
A three dimensional object can also be represented using_______ |
| A. | Method |
| B. | Equation |
| C. | Point |
| D. | None of these |
| Answer» B. Equation | |
| 14. |
A three dimensional graphics has |
| A. | Two axes |
| B. | Three axes |
| C. | Both a & b |
| D. | None of these |
| Answer» B. Three axes | |
| 15. |
An_______ can be considered as an extension of spherical surface |
| A. | Bezier |
| B. | Ellipsoid |
| C. | Shearing |
| D. | None of these |
| Answer» B. Ellipsoid | |
| 16. |
Sp line curve can be either |
| A. | Bezier sp line |
| B. | B sp line |
| C. | Both a & b |
| D. | None of these |
| Answer» C. Both a & b | |
| 17. |
Bezier sp line always passes through |
| A. | First and second control point |
| B. | Does not pass from First and second control point |
| C. | Both a & b |
| D. | None of these |
| Answer» C. Both a & b | |
| 18. |
The Bezier curve obtained from the four control points is called a |
| A. | Square Bezier curve |
| B. | Cubic Bezier curve |
| C. | Hectare Bezier curve |
| D. | Rectangle Bezier curve |
| Answer» B. Cubic Bezier curve | |
| 19. |
The shape of a Bezier curve primarily depends upon the |
| A. | Position of control points |
| B. | Distance of control points |
| C. | Position of control panel |
| D. | None of these |
| Answer» A. Position of control points | |
| 20. |
The no of control points in a Bezier curve ensures the |
| A. | Jaggies of curve |
| B. | Smoothness of curve |
| C. | Straightness of curve |
| D. | None of these |
| Answer» B. Smoothness of curve | |
| 21. |
More the control points of a Bezier curve,________ quality of the curve |
| A. | Higher |
| B. | Lower |
| C. | Bad |
| D. | None of these |
| Answer» A. Higher | |
| 22. |
______is one of the function that is used to specify a single plane surface |
| A. | Meta-ball model |
| B. | Fill area |
| C. | Reflection |
| D. | None of these |
| Answer» B. Fill area | |
| 23. |
Meta-ball is used to describe |
| A. | Simplest object |
| B. | Complex object |
| C. | Composite object |
| D. | None of these |
| Answer» C. Composite object | |
| 24. |
Super quadrics is a class of object that contain |
| A. | Data |
| B. | Codes |
| C. | Both a & b |
| D. | None of these |
| Answer» C. Both a & b | |
| 25. |
When two molecules move apart, which effect on molecular shapes |
| A. | Stretching |
| B. | Snapping |
| C. | Contracting |
| D. | All of these |
| Answer» D. All of these | |
| 26. |
An object's _______ determine its orientation relative to the light sources. For each vertex, OpenGL uses the assigned normal to determine how much light that particular vertex receives from each light source. |
| A. | Unit |
| B. | Normal |
| C. | Double |
| D. | None |
| Answer» B. Normal | |
| 27. |
Bezier curve is tangent to the lines connecting _____________. |
| A. | First two points |
| B. | Last two points |
| C. | Fist two points and last two point |
| D. | None of the given |
| Answer» C. Fist two points and last two point | |
| 28. |
A parametric curve is one whose defining equations are given in terms of a -------------, common, independent variable called the parametric variable. |
| A. | Triple |
| B. | Double |
| C. | Single |
| D. | None of the given |
| Answer» C. Single | |
| 29. |
To ensure a smooth transition from one section of a piecewise __________ to the next, we can impose various continuity conditions at the connection points |
| A. | non parametric curve |
| B. | parametric curve |
| C. | polygon vector |
| D. | None of these |
| Answer» D. None of these | |
| 30. |
How many data elements for each region in quad-tree data structure |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 6 |
| Answer» C. 8 | |
| 31. |
How many data elements for each region in octree data structure |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 32. |
............... 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 | |
| 33. |
The operation that is used for repositioning the object is called |
| A. | Rubber band method |
| B. | Gravity method |
| C. | Dragging |
| D. | None |
| Answer» C. Dragging | |
| 34. |
Which method are used to construct and position the straight lines, arcs and circles etc. |
| A. | Rubber band method |
| B. | Gravity method |
| C. | Dragging |
| D. | None of these |
| Answer» C. Dragging | |
| 35. |
Identify the methods for Constructive Solid Geometry operations |
| A. | Ray casting |
| B. | Ray tracing |
| C. | Beam penetration |
| D. | Ray sorting |
| Answer» A. Ray casting | |
| 36. |
........................... solid representation takes advantage of spatial coherence to reduce the storage representations. |
| A. | Sweep representation |
| B. | Octree |
| C. | Polygon surfaces |
| D. | CSG |
| Answer» B. Octree | |
| 37. |
................... is a data element to store the pixels within an octant having same color |
| A. | Voxel |
| B. | Void |
| C. | Tex |
| D. | Flag |
| Answer» A. Voxel | |
| 38. |
Empty regions of the space are represented by type.................... |
| A. | int |
| B. | void |
| C. | null |
| D. | empty |
| Answer» B. void | |
| 39. |
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 OR of the end points code is 0000 |
| D. | A and B |
| Answer» D. A and B | |
| 40. |
The subcategories of orthographic projection are ? |
| A. | cavalier, cabinet, isometric |
| B. | cavalier, cabinet |
| C. | isometric, dimetric, trimetric |
| D. | isometric, cavalier, trimetric |
| Answer» C. isometric, dimetric, trimetric | |
| 41. |
Which are used to achieve the predetermined orientations and alignments of the objects |
| A. | Constraints |
| B. | Grid |
| C. | Gravity field |
| D. | None of these |
| Answer» A. Constraints | |
| 42. |
Which of the following curve is an Sp-line approximation method |
| A. | Bezier |
| B. | Ellipsoid |
| C. | Shearing |
| D. | None of these |
| Answer» A. Bezier | |
| 43. |
We translate a two-dimensional point by adding |
| A. | Translation distances |
| B. | Translation difference |
| C. | X and Y |
| D. | Only a |
| Answer» D. Only a | |
| 44. |
B-splines can be used for which of the following |
| A. | Curve-fitting and numerical differentiation of experimental data. |
| B. | approximation |
| C. | numerical transformation |
| D. | none of the above |
| Answer» A. Curve-fitting and numerical differentiation of experimental data. | |
| 45. |
A B-spline of order n is a piecewise polynomial function of degree ________ in a variable x |
| A. | (a)less than n |
| B. | greater than n |
| C. | (c)equal to n |
| D. | (d)none of these |
| Answer» A. (a)less than n | |
| 46. |
if a knot vector of m + 1 knots and n + 1 control points are given, the degree of the Bspline curve is p= |
| A. | m+n - 1 |
| B. | m-n-1 |
| C. | m+n+1 |
| D. | n-m+1 |
| Answer» B. m-n-1 | |
| 47. |
Second order parametric continuity(C2 continuity) means that both ____and____ parametric derivatives of the two curves are same at the intersection |
| A. | second and third |
| B. | first and second |
| C. | second and third |
| D. | third and fourth |
| Answer» B. first and second | |
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