MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
When the residuals are scaled, the vanishing value is ___________ |
| A. | less than 10 |
| B. | less than 10 |
| C. | more than 10<sup>-5</sup> |
| D. | less than 10<sup>-5</sup> |
| Answer» E. | |
| 2. |
Which of these is the denominator while finding the root mean square residual? |
| A. | Sum of the absolute residuals |
| B. | Sum of the actual residuals |
| C. | Number of elements |
| D. | Sum of the scaled residuals |
| Answer» D. Sum of the scaled residuals | |
| 3. |
Which of these values is used to find the normalized residual? |
| A. | The minimum of all the residuals |
| B. | The maximum of all the residuals |
| C. | The sum of all the residuals |
| D. | The product of all the residuals |
| Answer» C. The sum of all the residuals | |
| 4. |
Which of these statements states the need for the normalization of the residual? |
| A. | Different variables result in different level of residuals |
| B. | Different variables result in the same level of residuals |
| C. | Different variables result in different residuals |
| D. | Different variables result in same residuals |
| Answer» B. Different variables result in the same level of residuals | |
| 5. |
The maximum value of residual is used to __________ |
| A. | decrease the importance of sign |
| B. | compare with the vanishing value |
| C. | include the sign of the residual |
| D. | increase the importance of sign |
| Answer» C. include the sign of the residual | |
| 6. |
The absolute residual is calculated __________ |
| A. | to overcome high values of residuals |
| B. | to decelerate the convergence process |
| C. | to overcome the sign problems in the actual residual value |
| D. | to increase the rate of convergence |
| Answer» D. to increase the rate of convergence | |
| 7. |
Why is the residual form of the discretized equations used? |
| A. | It increases the rate of convergence |
| B. | It increases the stability |
| C. | It increases the accuracy |
| D. | Numerical errors are less |
| Answer» E. | |
| 8. |
When the field of the flow variable is exact, the residual will be __________ |
| A. | negative |
| B. | positive |
| C. | zero |
| D. | one |
| Answer» D. one | |
| 9. |
The standard form of the equations is solved for __________ and the residual form is solved for _________ |
| A. | flow variables, residuals |
| B. | flow variables, corrections |
| C. | corrections, flow variables |
| D. | residuals, flow variables |
| Answer» C. corrections, flow variables | |
| 10. |
Which of these equations can be written in the residual form? |
| A. | The discretized equations |
| B. | The governing equations |
| C. | The PDEs |
| D. | The ODEs |
| Answer» B. The governing equations | |