MCQOPTIONS
Saved Bookmarks
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. |
Which of these is correct for the multipoint method? |
| A. | multiple derivatives at each time step |
| B. | only one evaluation of derivative per time step |
| C. | order of accuracy is restricted to four |
| D. | extremely unstable |
| Answer» C. order of accuracy is restricted to four | |
| 2. |
Which of these is used by the Adam-Bashforth method? |
| A. | Newton’s method |
| B. | Frobenious covariant |
| C. | Frobenious norm |
| D. | Lagrange polynomial |
| Answer» E. | |
| 3. |
The Adam-Bashforth method is ____________ |
| A. | an explicit method |
| B. | an implicit method |
| C. | a first-order accurate method |
| D. | a second-order accurate method |
| Answer» B. an implicit method | |
| 4. |
To increase the order of accuracy, the multipoint method uses ___________ |
| A. | highly stable two-level methods for prediction and correction |
| B. | higher-order two-level methods for prediction and correction |
| C. | additional points where data is already available |
| D. | additional points where data is interpolated |
| Answer» D. additional points where data is interpolated | |
| 5. |
The predictor-corrector method is maximum ___________ |
| A. | second-order accurate |
| B. | cannot be defined |
| C. | third-order accurate |
| D. | fourth-order accurate |
| Answer» C. third-order accurate | |
| 6. |
The stability of the two-level predictor-corrector method matches with that of the __________ |
| A. | midpoint rule |
| B. | trapezoidal rule |
| C. | backward Euler method |
| D. | forward Euler method |
| Answer» E. | |
| 7. |
The two-level predictor-corrector method is __________ |
| A. | second-order accurate |
| B. | first-order accurate |
| C. | fourth-order accurate |
| D. | third-order accurate |
| Answer» B. first-order accurate | |
| 8. |
Which of these formulae is used for the corrector step of the two-level predictor-corrector method? |
| A. | Φn+1=Φn+\(\frac{1}{3}\) [2f(tn,Φn )+f(tn+1,Φn+1*)]Δt |
| B. | Φn+1=Φn+\(\frac{1}{2}\) [2f(tn,Φn )+f(tn+1,Φn+1*)]Δt |
| C. | Φn+1=Φn+\(\frac{1}{3}\) [f(tn,Φn )+2f(tn+1,Φn+1*)]Δt |
| D. | Φn+1=Φn+\(\frac{1}{2}\) [f(tn,Φn )+f(tn+1,Φn+1*)]Δt |
| Answer» E. | |
| 9. |
In the two-level predictor-corrector method, the prediction is done using _____________ |
| A. | trapezoidal rule |
| B. | explicit Euler method |
| C. | midpoint rule |
| D. | implicit Euler method |
| Answer» C. midpoint rule | |
| 10. |
The predictor-corrector method is a combination of ______________ |
| A. | midpoint and trapezoidal rules |
| B. | backward Euler method and Trapezoidal rule |
| C. | implicit and explicit methods |
| D. | forward and backward Euler methods |
| Answer» D. forward and backward Euler methods | |