MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Continuity equation can also be derived for polar coordinate system |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
For a flow to be physically possible it must primarily satisfy which equation? |
| A. | Equation of conservation of energy |
| B. | Equation of conservation of mass or continuity equation |
| C. | Equation of conservation of momentum |
| D. | None of the mentioned |
| Answer» B. Equation of conservation of mass or continuity equation | |
| 3. |
The diameter of a pipe at the section 1 is 9 cm. If the velocity of water flowing through the pipe at section 1 is 4.8 m/s and section 2 is 9 m/s, Determine the area at section 2. |
| A. | 33.93 m2 |
| B. | 67.86 m2 |
| C. | 16.96 m2 |
| D. | 38.66 m2 |
| Answer» B. 67.86 m2 | |
| 4. |
FOR_A_FLOW_TO_BE_PHYSICALLY_POSSIBLE_IT_MUST_PRIMARILY_SATISFY_WHICH_EQUATION??$ |
| A. | Equation of conservation of energy |
| B. | Equation of conservation of mass or continuity equation |
| C. | Equation of conservation of momentum |
| D. | None of the mentioned |
| Answer» B. Equation of conservation of mass or continuity equation | |
| 5. |
Continuity_equation_can_also_be_derived_for_polar_coordinate_system$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
The diameter of a pipe at the section 1 is 9 cm. If the velocity of water flowing through the pipe at section 1 is 4.8 m/s and section 2 is 9 m/s, Determine the area at section 2? |
| A. | 33.93 m<sup>2</sup> |
| B. | 67.86 m<sup>2</sup> |
| C. | 16.96 m<sup>2</sup> |
| D. | 38.66 m<sup>2</sup> |
| Answer» B. 67.86 m<sup>2</sup> | |
| 7. |
The continuity equation can only be used for analysis of conserved quantity. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
The diameters of a pipe at the sections 1 and 2 are 8 cm and 13 cm respectively. Find the discharge through pipe if the velocity of water flowing through the pipe at section 1 is 6 m/s. Determine also the velocity at section 2. |
| A. | 2.27 m/s |
| B. | 4.54 m/s |
| C. | 1.13 m/s |
| D. | 3.25 m/s |
| Answer» B. 4.54 m/s | |
| 9. |
What is the most common assumption while dealing with fluid flow problems using continuity equation? |
| A. | Flow is assumed to be compressible |
| B. | Flow is assumed to be unsteady |
| C. | Flow is assumed to be steady |
| D. | Flow is assumed to be turbulent |
| Answer» D. Flow is assumed to be turbulent | |
| 10. |
For compressible fluid flow in a pipe, having decrease in specific gravity what will be the effect of decrease in diameter? |
| A. | It will cause increase in velocity |
| B. | It will cause decrease in velocity |
| C. | It remains constant |
| D. | None of the mentioned |
| Answer» B. It will cause decrease in velocity | |
| 11. |
For incompressible fluid flow, if area reduces then what is the effect on the velocity. |
| A. | increases |
| B. | decreases |
| C. | first increases then decreases |
| D. | first decreases then increases |
| Answer» B. decreases | |
| 12. |
The continuity equation is only applicable to incompressible fluid. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
The continuity equation is based on the premise of- |
| A. | Law of conservation of energy |
| B. | Law of conservation of mass |
| C. | Law of conservation of momentum |
| D. | None of the mentioned |
| Answer» C. Law of conservation of momentum | |