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. |
Which of the following frame of references does this diagram represent? |
| A. | Polar |
| B. | Cartesian |
| C. | Lagrangian |
| D. | Eulerian |
| Answer» E. | |
| 2. |
Let,t → Instantaneous time\( \vec{v} \) → Velocity in x-direction\( \vec{x} \) → Instantaneous position\( \vec{x_0} \)→ Initial positionThe relationship between Eulerian and Lagrangian approaches for velocity in x direction is given by _______ |
| A. | \( \vec{v}(t, \vec{x}(\vec{x_0}, t)) = \frac{\partial \vec{x} (\vec{x_0}, t)}{\partial t} \) |
| B. | \( \vec{v}(t, \vec{x}(\vec{x_0}, t)) = \frac{\partial \vec{x_0} (\vec{x}, t)}{\partial t} \) |
| C. | \( \vec{v}(t, \vec{x_0}(\vec{x}, t)) = \frac{\partial \vec{x} (\vec{x_0}, t)}{\partial t} \) |
| D. | \( \vec{v}(t, \vec{x_0}(\vec{x}, t)) = \frac{\partial \vec{x_0} (\vec{x}, t)}{\partial t} \) |
| Answer» B. \( \vec{v}(t, \vec{x}(\vec{x_0}, t)) = \frac{\partial \vec{x_0} (\vec{x}, t)}{\partial t} \) | |
| 3. |
In Lagrangian approach, the flow parcels follow __________ |
| A. | pressure field |
| B. | velocity field |
| C. | temperature field |
| D. | density field |
| Answer» C. temperature field | |
| 4. |
The independent variables in Eulerian approach are __________ and __________ |
| A. | instantaneous time and instantaneous position |
| B. | initial time and instantaneous position |
| C. | instantaneous time and Initial position |
| D. | initial time and initial position |
| Answer» B. initial time and instantaneous position | |
| 5. |
According to Eulerian approach, which of these is correct? |
| A. | Both location and fluid move |
| B. | Location moves and fluid is stationary |
| C. | Both location and fluid are stationary |
| D. | Location is stationary and fluid moves |
| Answer» E. | |
| 6. |
Which of these is an acceptable tag for Lagrangian parcels? |
| A. | Parcel’s centre of mass at instantaneous time |
| B. | Parcel’s centre of pressure at instantaneous time |
| C. | Parcel’s centre of mass at initial time |
| D. | Parcel’s centre of pressure at initial time |
| Answer» D. Parcel’s centre of pressure at initial time | |
| 7. |
Which of these will best define positions of the parcel in increasing time? |
| A. | Streamline |
| B. | Streakline |
| C. | Boundary line |
| D. | Pathline |
| Answer» E. | |
| 8. |
Each parcel in the Lagrangian formulation is tagged using __________ |
| A. | time-dependent position vector |
| B. | time-independent position vector |
| C. | time-dependent velocity vector |
| D. | time-independent velocity vector |
| Answer» C. time-dependent velocity vector | |
| 9. |
The fluid is subdivided into fluid parcels and every fluid parcel is followed as it moves through space and time. Which kind of formulation is this? |
| A. | Cartesian |
| B. | Eulerian |
| C. | Lagrangian |
| D. | Euclidian |
| Answer» D. Euclidian | |
| 10. |
The principle of conservation is applicable to _______ systems. |
| A. | isolated system |
| B. | closed system |
| C. | open system |
| D. | all the systems irrespective of its type |
| Answer» B. closed system | |