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. |
The range of turbulent Prandtl number is ___________ |
| A. | 0.5 to 0.7 |
| B. | 0.7 to 0.9 |
| C. | 0.9 to 1.5 |
| D. | 1.5 to 1.7 |
| Answer» C. 0.9 to 1.5 | |
| 2. |
The range of turbulent Schmidt number is ___________ |
| A. | 0.2 to 3.5 |
| B. | 0.2 to 1.5 |
| C. | 1 to 3.5 |
| D. | 0 to 0.2 |
| Answer» B. 0.2 to 1.5 | |
| 3. |
Turbulent Schmidt number is used to solve ____________ |
| A. | mass transfer in a turbulent boundary layer |
| B. | compressible flows |
| C. | boundary layer flows |
| D. | heat transfer in a turbulent boundary layer |
| Answer» B. compressible flows | |
| 4. |
Turbulent Prandtl number is useful in __________ |
| A. | SST |
| B. | DNS |
| C. | LES |
| D. | RANS |
| Answer» E. | |
| 5. |
Turbulent Prandtl number is used in CFD to ____________ |
| A. | change viscosity profiles |
| B. | change temperature profiles |
| C. | modulate heat transfer results |
| D. | modulate velocity profiles |
| Answer» D. modulate velocity profiles | |
| 6. |
Which of these is correct when the turbulent Prandtl number is unity? |
| A. | Turbulent diffusivity is zero |
| B. | Turbulent viscosity is zero |
| C. | The flow becomes laminar |
| D. | The velocity and temperature profiles are identical |
| Answer» E. | |
| 7. |
According to Reynolds analogy, what is the value of turbulent Schmidt number? |
| A. | -1 |
| B. | 0 |
| C. | 1 |
| D. | ∞ |
| Answer» D. ∞ | |
| 8. |
What is the unit of turbulent Schmidt/Prandtl number? |
| A. | m2/s |
| B. | It is dimensionless |
| C. | m2/s2 |
| D. | m/s2 |
| Answer» C. m2/s2 | |
| 9. |
Turbulent Prandtl number is the ratio of ____________ |
| A. | turbulent transport of heat to turbulent transport of momentum |
| B. | turbulent transport of momentum to turbulent transport of heat |
| C. | turbulent viscosity to turbulent transport of heat |
| D. | turbulent transport of heat to turbulent viscosity |
| Answer» C. turbulent viscosity to turbulent transport of heat | |
| 10. |
Turbulent Schmidt number is the ratio of ____________ |
| A. | turbulent viscosity to turbulent diffusivity |
| B. | turbulent diffusivity to turbulent viscosity |
| C. | turbulent rate to turbulent diffusivity |
| D. | turbulent diffusivity to turbulent rate |
| Answer» B. turbulent diffusivity to turbulent viscosity | |