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 general discretized equation given by aP P+ F~NB(P)aF F =0. According to the zero sum rule, which of these is correct? |
| A. | <sub>F~NB(P)</sub> ( frac{a_F}{a_P} ) = |
| B. | <sub>F~NB(P)</sub> ( frac{a_F}{a_P} ) = 1 |
| C. | <sub>F~NB(P)</sub> ( frac{a_F}{a_P} ) = -1 |
| D. | <sub>F~NB(P)</sub> ( frac{a_F}{a_P} ) = - |
| Answer» D. <sub>F~NB(P)</sub> ( frac{a_F}{a_P} ) = - | |
| 2. |
Consider the general discretized equation given by aP P+ F~NB(P)aF F = 0. According to the zero sum rule, which of these is correct? |
| A. | a<sub>P</sub>+ <sub>F~NB(P)</sub>a<sub>F</sub> = |
| B. | a<sub>P</sub>+ <sub>F~NB(P)</sub>a<sub>F</sub> = 0 |
| C. | a<sub>P</sub>+ <sub>F~NB(P)</sub>a<sub>F</sub> = 1 |
| D. | a<sub>P</sub>+ <sub>F~NB(P)</sub>a<sub>F</sub> = -1 |
| Answer» C. a<sub>P</sub>+ <sub>F~NB(P)</sub>a<sub>F</sub> = 1 | |
| 3. |
Consider the general discretized equation given by aP P+ F~NB(P)aF F =0. Which of these statements is correct according to the opposite signs rule? |
| A. | a<sub>P</sub> and a<sub>F</sub> are of opposite signs |
| B. | a<sub>P</sub> and <sub>P</sub> are of opposite signs |
| C. | a<sub>F</sub> and <sub>F</sub> are of opposite signs |
| D. | <sub>P</sub> and <sub>F</sub> are of opposite signs |
| Answer» B. a<sub>P</sub> and <sub>P</sub> are of opposite signs | |
| 4. |
Boundedness is ensured in the steady-state diffusion problem _______________ |
| A. | only when the source term is non-negative |
| B. | only when the source term is negative |
| C. | only when the source term is non-zero |
| D. | only when the source term is zero |
| Answer» E. | |
| 5. |
Consider the general discretized equation given by aP P+ F~NB(P)aF F =0. Which of these statements is correct? |
| A. | When the value of <sub>F</sub> is increased, the value of <sub>P</sub> remains the same |
| B. | When the value of <sub>F</sub> is increased, the value of <sub>P</sub> increased |
| C. | When the value of <sub>F</sub> is increased, the value of <sub>P</sub> decreases |
| D. | When the value of <sub>F</sub> is decreased, the value of <sub>P</sub> decreases |
| Answer» D. When the value of <sub>F</sub> is decreased, the value of <sub>P</sub> decreases | |
| 6. |
In the absence of any source or sink, the steady-state diffusion problem is governed by _______________ |
| A. | Fourier series |
| B. | Linear interpolation |
| C. | Taylor series |
| D. | Second order interpolation |
| Answer» B. Linear interpolation | |
| 7. |
Why a parabolic profile is not used to model the variation of ? |
| A. | Accuracy comes at the cost of computation |
| B. | Exact results |
| C. | Unphysical results |
| D. | Difficult to use |
| Answer» D. Difficult to use | |
| 8. |
Which of these assumptions is made regarding the variation of over a domain? |
| A. | Linear profile |
| B. | Central differencing |
| C. | Quadratic profile |
| D. | Downwind differencing |
| Answer» B. Central differencing | |
| 9. |
Which of these is a sufficient condition for a discretized equation? |
| A. | Neither the opposite sign rule nor the zero sum rule |
| B. | Both the opposite sign and the zero sum rules |
| C. | The opposite signs rule |
| D. | The zero sum rule |
| Answer» D. The zero sum rule | |
| 10. |
The zero sum rule and the opposite signs rule are applicable to _______________ |
| A. | each discretized equation |
| B. | the global matrix |
| C. | the coefficients of each discretized equation |
| D. | the coefficient matrix |
| Answer» D. the coefficient matrix | |