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. |
Consider the one-dimensional heat conduction equation. Apply forward difference method to approximate time rate and central difference method to approximate x-derivative. The resulting equation is in _____________ |
| A. | Implicit linear form |
| B. | Explicit linear form |
| C. | Explicit non-linear form |
| D. | Implicit non-linear form |
| Answer» C. Explicit non-linear form | |
| 2. |
Which of these schemes will lead to an implicit problem? |
| A. | Higher-order schemes |
| B. | SIMPLE algorithm |
| C. | High-resolution scheme |
| D. | Crank-Nicolson scheme |
| Answer» E. | |
| 3. |
The time-step size in explicit schemes depends upon _____________ |
| A. | Grid size |
| B. | Number of iterations |
| C. | Total time interval |
| D. | Given mathematical equation |
| Answer» B. Number of iterations | |
| 4. |
Which of these may cause a problem to implicit schemes? |
| A. | Coupled equations |
| B. | Partial differential equations |
| C. | Non-linear equations |
| D. | Linear equations |
| Answer» D. Linear equations | |
| 5. |
Which of these is correct regarding implicit schemes? |
| A. | Truncation error is less |
| B. | Computation time is more |
| C. | Time-step size is small |
| D. | Easy to set-up |
| Answer» B. Computation time is more | |
| 6. |
What is advantageous in implicit schemes? |
| A. | Error |
| B. | Consistency |
| C. | Convergence |
| D. | Stability |
| Answer» E. | |
| 7. |
Which of these properties limit the time-step size in the explicit schemes? |
| A. | Convergence |
| B. | Stability |
| C. | Consistency |
| D. | Error |
| Answer» C. Consistency | |
| 8. |
Implicit time-based problems will result in __________ |
| A. | Coupled equations |
| B. | Uncoupled equations |
| C. | Linear equations |
| D. | Non-linear equations |
| Answer» B. Uncoupled equations | |
| 9. |
What is the main disadvantage of explicit schemes in a time-dependent problem? |
| A. | Marching solution |
| B. | Simultaneous equations |
| C. | Small time-step size |
| D. | Small grid size |
| Answer» D. Small grid size | |
| 10. |
Which of these methods of solving a system of equations will be needed after using an explicit scheme? |
| A. | Sequential |
| B. | Simultaneous |
| C. | Iterative |
| D. | Direct |
| Answer» B. Simultaneous | |