MCQOPTIONS
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MCQOPTIONS
This section includes 92 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In which type of projection, actual dimensions and angles of objects and therefore shapes cannot be preserved? |
| A. | User Coordinate System |
| B. | World Coordinate System |
| C. | Screen Coordinate System |
| D. | None of the above |
| Answer» C. Screen Coordinate System | |
| 2. |
When every entity of a geometric model remains parallel to its initial position, the transformation is called as |
| A. | User Coordinate System |
| B. | World Coordinate System |
| C. | Screen Coordinate System |
| D. | None of the above |
| Answer» C. Screen Coordinate System | |
| 3. |
If point are expressed in homogeneous coordinates then the pair of (x, y) is represented as |
| A. | (x , y , z ) |
| B. | (x, y, z) |
| C. | (x , y , w ) |
| D. | (x , y , w) |
| Answer» E. | |
| 4. |
We can combine the multiplicative and translational terms for 2D into a single matrix representation by expanding |
| A. | 2 x 2 matrix into 4x4 matrix |
| B. | 2 x 2 matrix into 3 x 3 |
| C. | 3 x 3 matrix into 2 x 2 |
| D. | Only c |
| Answer» C. 3 x 3 matrix into 2 x 2 | |
| 5. |
Which co-ordinates allow common vector operations such as translation, rotation, scaling and perspective projection to be represented as a matrix by which the vector is multiplied? |
| A. | vector co-ordinates |
| B. | 3D co-ordinates |
| C. | affine co-ordinates |
| D. | homogenous co-ordinates |
| Answer» E. | |
| 6. |
In Coordinates, a points in n-dimensional space is represent by (n+1) coordinates. |
| A. | Scaling |
| B. | Homogeneous |
| C. | Inverse transformation |
| D. | 3D Transformation |
| Answer» C. Inverse transformation | |
| 7. |
Mathematically, the ellipse is a curve generated by a point moving in space such that at any position the sum of its distances from two fixed points (foci) is constant and equal to |
| A. | the major diameter |
| B. | the minor diameter |
| C. | semi major diameter |
| D. | semi-minor diameter |
| Answer» B. the minor diameter | |
| 8. |
When a smooth curve is approximated through the data points, then the curve is known as |
| A. | interpolant curve |
| B. | approximation curve |
| C. | pitch curve |
| D. | data curve |
| Answer» C. pitch curve | |
| 9. |
The number of control points can be added or subtracted in . |
| A. | Bezier curve |
| B. | B-spline curve |
| C. | Cubic spline curve |
| D. | all of the above |
| Answer» C. Cubic spline curve | |
| 10. |
Structuring and combining the primitives of the solid model in the graphics database, is achieved by the use of .. |
| A. | FEA |
| B. | transformations |
| C. | boolean operations |
| D. | none of the above |
| Answer» D. none of the above | |
| 11. |
Which of the following uses a number of two-dimensional profiles for generating a three-dimensional object? |
| A. | Tweaking |
| B. | Lofting |
| C. | Filleting |
| D. | none of the above |
| Answer» C. Filleting | |
| 12. |
For 3D modeling of automobile body styling, which of the following is a preferred technique? |
| A. | Constructive Solid Geometry |
| B. | Pure Primitive Instancing |
| C. | Boundary Representation |
| D. | Spatial Occupancy Enumeration |
| Answer» D. Spatial Occupancy Enumeration | |
| 13. |
Two lines L1 and L2 having Parametric equations are P1=[3 4 7]+u[2 2 -6] and P2=[1 5 -2]+u[1 4 2]. Tangent vector for line L1 |
| A. | 2i+2j-6k |
| B. | 2i+2j+6k |
| C. | 2i-2j-6k |
| D. | 6-2j-2k |
| Answer» B. 2i+2j+6k | |
| 14. |
Reversing the order in which a sequence of transformations is performed may affect the transformed position of an object. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
In which type of projection, actual dimensions and angles of objects and therefore shapes cannot be preserved? |
| A. | Orthographic |
| B. | Isometric |
| C. | Perspective |
| D. | None of the above |
| Answer» D. None of the above | |
| 16. |
A system that automates the drafting process with interactive computer graphics is called |
| A. | Computer Aided Engineering (CAE) |
| B. | Computer Aided Design (CAD) |
| C. | Computer Aided Manufacturing (CAM) |
| D. | Computer Aided Instruction (CAI) |
| Answer» C. Computer Aided Manufacturing (CAM) | |
| 17. |
In the following geometric modelling techniques which are not three-dimensional modelling? |
| A. | Wireframe modelling |
| B. | Drafting |
| C. | Surface modelling |
| D. | solid modelling |
| Answer» C. Surface modelling | |
| 18. |
A line AB with end points A (2, 1) & B (7, 6) is to be moved by 3 units in x-direction & 4 units in y-direction. Calculate new coordinates of points B. |
| A. | (10, 2) |
| B. | (2, 10) |
| C. | (10, 10) |
| D. | (10, 5) |
| Answer» D. (10, 5) | |
| 19. |
In a 2-D CAD package, clockwise circular arc of radius, 5, specified from P1 (15,10) to P2 (10,15)will have its center at |
| A. | (10, 10) |
| B. | (15, 10) |
| C. | (15, 15) |
| D. | (10, 15) |
| Answer» B. (15, 10) | |
| 20. |
In the following three-dimensional modelling techniques. Which do not require much computer time and memory? |
| A. | Surface modelling |
| B. | Solid modelling |
| C. | Wireframe modelling |
| D. | All of the above |
| Answer» D. All of the above | |
| 21. |
In the bezier curve, the curve is always to first and last segments of the polygon |
| A. | normal |
| B. | parallel |
| C. | tangent |
| D. | none of the above |
| Answer» D. none of the above | |
| 22. |
To determine the coefficients of the equation two end-points and the two tangent vectors. This statement is true for which of the following |
| A. | B-spline curve |
| B. | Hermite Cubic Spline Curve |
| C. | Beizer curve |
| D. | none of the above |
| Answer» C. Beizer curve | |
| 23. |
A circle is represented by center point [5,5] and radius 6 units. Find the parametric equation of circle and determine the various points on circle in first quadrant if increment in angle by 45o |
| A. | 9.24,9.24 |
| B. | 9.42,9.42 |
| C. | 9,9 |
| D. | 11,5 |
| Answer» B. 9.42,9.42 | |
| 24. |
A circle is passing through two end points A[6,4] and B[10,10]. Find center point of circle |
| A. | 7,8 |
| B. | 8,8 |
| C. | 8,7 |
| D. | 7,7 |
| Answer» D. 7,7 | |
| 25. |
Find parametric equation for Y-coordinates of Hermite cubic spline curve having end points P0[4,4]; P1[8,5] |
| A. | 2u3-3u2+2u+4 |
| B. | 3u3-2u2-2u-4 |
| C. | 2u3-3u2-2u-4 |
| D. | 2u3+3u2+2u+4 |
| Answer» B. 3u3-2u2-2u-4 | |
| 26. |
Find parametric equation for X-coordinates of hermite cubic spline curve having end points P0[4,4]; P1[8,5] |
| A. | -5u3+8u2+u+1 |
| B. | 5u3+8u2+u+1 |
| C. | 8u3-5u2-u+1 |
| D. | 8u3+5u2+u+1 |
| Answer» B. 5u3+8u2+u+1 | |
| 27. |
When a smooth curve is approximated through the data points, then the curve is known as |
| A. | approximation curve |
| B. | pitch curve |
| C. | data curve |
| D. | interpolant curve |
| Answer» B. pitch curve | |
| 28. |
Mathematically, the ellipse is a curve generated by a point moving in space such that at any position the sum of its distances from two fixed points (foci) is constant and equal to |
| A. | the major diameter |
| B. | the minor diameter |
| C. | semi major diameter |
| D. | semi-minor diameter |
| Answer» B. the minor diameter | |
| 29. |
The parabola is defined mathematically as a curve generated by a point that moves such that its distance from the focus is always__________the distance to the directrix |
| A. | larger than |
| B. | smaller than |
| C. | equal to |
| D. | none of the above |
| Answer» D. none of the above | |
| 30. |
To determine the coefficients of the equation two end-points and the two tangent vectors. This statement is true for which of the following? |
| A. | B-spline curve |
| B. | Hermite Cubic Spline Curve |
| C. | Beizer curve |
| D. | none of the above |
| Answer» C. Beizer curve | |
| 31. |
For 3D modeling of automobile body styling, which of the following is a preferred technique |
| A. | Constructive Solid Geometry |
| B. | Pure Primitive Instancing |
| C. | Boundary Representation |
| D. | Spatial Occupancy Enumeration |
| Answer» D. Spatial Occupancy Enumeration | |
| 32. |
The art of subdividing the structure into a convenient number of smaller elements is known as |
| A. | discretization |
| B. | assemblage |
| C. | continuum |
| D. | traction |
| Answer» B. assemblage | |
| 33. |
To solve the FEM problem, it subdivides a large problem into smaller, simpler parts that are called |
| A. | static elements |
| B. | dynamic elements |
| C. | infinite elements |
| D. | finite elements |
| Answer» E. | |
| 34. |
For 1-D bar elements if the structure is having 3 nodes then the stiffness matrix formed is having an order of |
| A. | 2*2 |
| B. | 3*3 |
| C. | 4*4 |
| D. | 6*6 |
| Answer» C. 4*4 | |
| 35. |
Reflection about the line y=0, the axis, is accomplished with the transformation matrix with how many elements as 0 ? |
| A. | 8 |
| B. | 9 |
| C. | 4 |
| D. | 6 |
| Answer» E. | |
| 36. |
Which transformation distorts the shape of an object such that the transformed shape appears as if the object were composed of internal layers that had been caused to slide over each other? |
| A. | Rotation |
| B. | Scaling up |
| C. | Scaling down |
| D. | Shearing |
| Answer» E. | |
| 37. |
The window opened on the raster graphics screen in which the image will be displayed is called |
| A. | World co-ordinate system |
| B. | Screen co-ordinate system |
| C. | World window |
| D. | Interface window |
| Answer» E. | |
| 38. |
The process of mapping a world window in World Coordinates to the Viewport is called Viewing transformation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 39. |
Panning is a technique in which users can change the size of the area to be viewed in order to see more detail or less detail. |
| A. | True |
| B. | False |
| Answer» C. | |
| 40. |
Drawing of number of copies of the same image in rows and columns across the interface window so that they cover the entire window is called |
| A. | Roaming |
| B. | Panning |
| C. | Zooming |
| D. | Tiling |
| Answer» E. | |
| 41. |
By changing the dimensions of the viewport, the and of the objects being displayed can be manipulated. |
| A. | Number of pixels and image quality |
| B. | X co-ordinate and Y co-ordinate |
| C. | Size and proportions |
| D. | All of these |
| Answer» D. All of these | |
| 42. |
Any convenient co-ordinate system or Cartesian co-ordinates which can be used to define the picture is called |
| A. | spherical co-ordinates |
| B. | vector co-ordinates |
| C. | viewport co-ordinates |
| D. | world co-ordinates |
| Answer» E. | |
| 43. |
The transformation of perspective projection must include, where d is the distance between the center of projection to the projection plane. |
| A. | D |
| B. | 1/d |
| C. | -d |
| D. | -1/d |
| Answer» E. | |
| 44. |
Match the following: NC code Definition P. M05 1. Absolute coordinate system Q. G01 2. Dwell R. G04 3. Spindle stop S. G09 4. Linear interpolation |
| A. | P-2, Q-3, R-4, S-1 |
| B. | P-3, Q-4, R-1, S-2 |
| C. | P-3, Q-4, R-2, S-1 |
| D. | P-4, Q-3, R-2, S-1 |
| Answer» D. P-4, Q-3, R-2, S-1 | |
| 45. |
is the origin of the coordinate system which is defined by manufacturer they cannot be changed |
| A. | Blocking Point |
| B. | machine Zero Point |
| C. | Start Point |
| D. | Program Zero point |
| Answer» C. Start Point | |
| 46. |
In the context of rapid prototyping and additive manufacturing, tessellation refers to the process of slicing the CAD model of the part into layers. |
| A. | Droplet Deposition Manufacturing |
| B. | Used-Deposition Modeling |
| C. | Laminated-Object Manufacturing |
| D. | Stereolithography |
| Answer» E. | |
| 47. |
An absolute NC system is one in which all position coordinates are referred to one fixed origin called the zero point. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 48. |
In , the coordinates are mentioned in the program with respect to one reference point |
| A. | Incremental System |
| B. | Absolute System |
| C. | Datum System |
| D. | Screen Coordinates System |
| Answer» C. Datum System | |
| 49. |
is a group of words or coded instruction for the NC/CNC system to execute a particular movement. |
| A. | Sequence |
| B. | Address |
| C. | Code |
| D. | Block |
| Answer» E. | |
| 50. |
In , the coordinates are mentioned in the program with respect to one Previous point. |
| A. | Incremental System |
| B. | Absolute System |
| C. | Datum System |
| D. | Screen Coordinates System |
| Answer» B. Absolute System | |