MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Computational Fluid Dynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
To find the value of a flow variable at a third point in between two points with known values, which of these methods can be used for the one-dimensional case? |
| A. | Shape function |
| B. | Interpolation |
| C. | Taylor series |
| D. | Fourier series |
| Answer» C. Taylor series | |
| 2. |
I know the value of the flow variable at two points. In which of these cases, is it easy for me to calculate the flow variable at a point between these two? |
| A. | Three-dimensional FVM |
| B. | Two-dimensional FVM |
| C. | One-dimensional FVM |
| D. | Two-dimensional FDM |
| Answer» D. Two-dimensional FDM | |
| 3. |
How is it identified whether a vector is pointing outwards or inwards? |
| A. | Sign of the vector joining the element s centroid with the face s centroid is used |
| B. | Sign of the surface vector is used |
| C. | Cross product of the surface vector and the vector joining the element s centroid with the face s centroid |
| D. | Dot product of the surface vector and the vector joining the element s centroid with the face s centroid |
| Answer» E. | |
| 4. |
The surface area of the face of a 3-D element is a _____________ |
| A. | 3-D tensor |
| B. | 2-D tensor |
| C. | Scalar |
| D. | Vector |
| Answer» E. | |
| 5. |
The centroid of the faces of a 3-D element is obtained by _________ |
| A. | Area-weighted average of the sub-elements |
| B. | Average of the sub-elements |
| C. | Area-weighted average of the centroid of the sub-elements |
| D. | Volume-weighted average of the centroid of the sub-elements |
| Answer» D. Volume-weighted average of the centroid of the sub-elements | |
| 6. |
Which of these formulae is used to find the area of the sub-elements in CFD? |
| A. | Vector product of two sides |
| B. | Half of the vector product of two sides |
| C. | Half of the base times height |
| D. | Half of the vector product of all three sides |
| Answer» C. Half of the base times height | |
| 7. |
Which formula is suitable for finding the geometric centre of a polygonal face? |
| A. | ( frac{1}{No.of points} sum_{i=1}^{No.of points} ) Point defining the polygon<sub>i</sub> |
| B. | ( sum_{i=1}^{No.of , points} ) Point defining the polygon<sub>i</sub> |
| C. | ( frac{1}{Point , defining , the , polygon} sum_{i=1}^{No.of , points} ) Point defining the polygon<sub>i</sub> |
| D. | ( frac{1}{No.of , points} sum_{i=1}^{No.of , points} )Centroid<sub>i</sub> |
| Answer» B. ( sum_{i=1}^{No.of , points} ) Point defining the polygon<sub>i</sub> | |
| 8. |
Which of these points form the apex of the sub-elements of the faces? |
| A. | Centre of mass of the face |
| B. | Vertex of the face |
| C. | Geometric centre of the face |
| D. | Apex of the face |
| Answer» D. Apex of the face | |
| 9. |
How are the faces of a 3-D element divided to find the area? |
| A. | Squares |
| B. | Quadrilaterals |
| C. | Rectangles |
| D. | Triangles |
| Answer» E. | |