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. |
What is the problem in solving flows with Mach numbers around and above 1? |
| A. | Mach number |
| B. | Compressibility |
| C. | Continuity |
| D. | Pressure |
| Answer» C. Continuity | |
| 2. |
What happens with the over-specification of boundary conditions? |
| A. | Infinite solutions |
| B. | Unique solutions |
| C. | Unphysical solutions |
| D. | No solution |
| Answer» D. No solution | |
| 3. |
Under-specification of boundary conditions gives rise to _____________ |
| A. | solution equal to zero |
| B. | no solution |
| C. | a unique solution |
| D. | n-number of solutions |
| Answer» E. | |
| 4. |
What is the problem in modelling flows with high Reynolds number? |
| A. | A mixture of viscous and inviscid flow regions |
| B. | A mixture of subsonic and supersonic flow regions |
| C. | A mixture of elliptic and parabolic flows |
| D. | A mixture of elliptic and hyperbolic flows |
| Answer» B. A mixture of subsonic and supersonic flow regions | |
| 5. |
CFD solutions are excellent for flows with _____________Note: ‘M’ is the Mach number of the flow. |
| A. | M > 1 |
| B. | M < 1 |
| C. | M = 1 |
| D. | M > 5 |
| Answer» C. M = 1 | |
| 6. |
The flow variables for a/ an _____________ should be solved simultaneously with the flow variables at all other points in the domain. |
| A. | Hyperbolic flow |
| B. | Elliptic flow |
| C. | Parabolic flow |
| D. | Mixed flow |
| Answer» C. Parabolic flow | |
| 7. |
Which kind of flows need an initial condition? |
| A. | Parabolic and hyperbolic |
| B. | Hyperbolic and elliptic |
| C. | Elliptic and Parabolic |
| D. | Elliptic |
| Answer» B. Hyperbolic and elliptic | |
| 8. |
Which of these mathematical models suit unsteady Navier-Stokes equations? |
| A. | Elliptic |
| B. | Hyperbolic |
| C. | Parabolic |
| D. | Mixed |
| Answer» E. | |
| 9. |
What is the difficulty in modelling supersonic blunt body problem? |
| A. | The PDE cannot be solved |
| B. | A PDE cannot be formed |
| C. | Mixed flow behaviour |
| D. | Boundary conditions cannot be formed |
| Answer» D. Boundary conditions cannot be formed | |
| 10. |
When can we say that a problem is suitable to be solved using CFD? |
| A. | The PDE has no solution |
| B. | The solution to PDE is unique and it depends continuously on the initial and boundary conditions |
| C. | The PDE has more than one solution |
| D. | The solution to PDE is unique and independent of the initial and boundary conditions |
| Answer» C. The PDE has more than one solution | |