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. |
For which of these flows, periodic or cyclic boundary conditions are applicable? |
| A. | External flow over objects |
| B. | Swirling flow inside a cylindrical furnace |
| C. | Free surface flows |
| D. | Buoyancy driven flows |
| Answer» C. Free surface flows | |
| 2. |
The pairing operation can be done for all properties except ___________ of a flow. |
| A. | pressure |
| B. | density |
| C. | velocity components |
| D. | temperature |
| Answer» D. temperature | |
| 3. |
For cyclic boundary conditions, which of these should be equated? |
| A. | The flow variables |
| B. | Gradient of the flow variables |
| C. | Flux of the flow variables |
| D. | Second derivative of the flow variables |
| Answer» D. Second derivative of the flow variables | |
| 4. |
Periodic or cyclic boundary conditions are a type of ____________ |
| A. | wall boundary conditions |
| B. | constant pressure boundary conditions |
| C. | inlet boundary conditions |
| D. | symmetry boundary conditions |
| Answer» E. | |
| 5. |
The velocity components in the nodes which are not at the boundary are found using ____________ |
| A. | energy equation |
| B. | continuity equation |
| C. | equations of state |
| D. | momentum equation |
| Answer» E. | |
| 6. |
Constant pressure boundary condition makes the pressure correction cell nearest to the boundaries to act as ____________ |
| A. | Source or sink of mass |
| B. | Source or sink of heat |
| C. | Convection cell |
| D. | Diffusion cell |
| Answer» B. Source or sink of heat | |
| 7. |
Which of these conditions is used to find the velocity component of the boundary while using constant pressure boundary condition? |
| A. | Conservation of angular momentum |
| B. | Conservation of linear momentum |
| C. | Energy conservation |
| D. | Continuity |
| Answer» E. | |
| 8. |
Which of these pose a problem in constant pressure boundaries? |
| A. | Velocity |
| B. | Flow direction |
| C. | Density |
| D. | Heat flux direction |
| Answer» C. Density | |
| 9. |
While applying the constant pressure boundary condition, which of these is done? |
| A. | Pressure is set to 0 |
| B. | Pressure correction is set to 1 |
| C. | Pressure correction is set to zero |
| D. | Pressure is set to 1 |
| Answer» D. Pressure is set to 1 | |
| 10. |
When do we use a constant pressure boundary condition? |
| A. | When there is an impermeable boundary |
| B. | When there is constant pressure |
| C. | When we do not know the flow distribution but we know the pressure at the boundaries |
| D. | When we do not know the pressure at the boundaries |
| Answer» D. When we do not know the pressure at the boundaries | |