MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
The head loss at the entrance of the pipe is that at it’s exit |
| A. | equal to |
| B. | half |
| C. | twice |
| D. | four times |
| Answer» C. twice | |
| 2. |
A liquid flowss through two similar pipes 1 and 2. If the ratio of their flow velocities v1 : v2 be 2:3, what will be the ratio of the head loss in the two pipes? |
| A. | 3:2 |
| B. | 9:4 |
| C. | 2:3 |
| D. | 4:9 |
| Answer» E. | |
| 3. |
A liquid flows through pipes 1 and 2 with the same flow velocity. If the ratio of their pipe diameters d1 : d2 be 3:2, what will be the ratio of the head loss in the two pipes? |
| A. | 3:2 |
| B. | 9:4 |
| C. | 2:3 |
| D. | 4:9 |
| Answer» D. 4:9 | |
| 4. |
The frictional resistance for fluids in motion varies |
| A. | slightly with temperature for both laminar and turbulent flows |
| B. | considerably with temperature for both laminar and turbulent flows |
| C. | slightly with temperature for laminar flow and considerably with temperature for turbulent flow |
| D. | considerably with temperature for laminar flow and slightly with temperature for turbulent flow |
| Answer» E. | |
| 5. |
WHICH_ONE_OF_THE_FOLLFLOWING_IS_CORRECT??$ |
| A. | Darcy-Weisbach’s formula is generally used for head loss in flow through both pipes and open channels |
| B. | Chezy’s formula is generally used for head loss in flow through both pipes and open channels |
| C. | Darcy-Weisbach’s formula is generally used for head loss in flow through both pipes and Chezy’s formula for open channels |
| D. | Chezy’s formula is generally used for head loss in flow through both pipes and Darcy-Weisbach’s formula for open channels |
| Answer» D. Chezy‚Äö√Ñ√∂‚àö√ë‚àö¬•s formula is generally used for head loss in flow through both pipes and Darcy-Weisbach‚Äö√Ñ√∂‚àö√ë‚àö¬•s formula for open channels | |
| 6. |
A liquid flowss through two similar pipes 1 and 2. If the ratio of their flow velocities v1 : v2 be 2:3, what will be the ratio of the head loss in the two pipes?$ |
| A. | 3:2 |
| B. | 9:4 |
| C. | 2:3 |
| D. | 4:9 |
| Answer» E. | |
| 7. |
A liquid flows through pipes 1 and 2 with the same flow velocity. If the ratio of their pipe diameters d1 : d2 be 3:2, what will be the ratio of the head loss in the two pipes?$ |
| A. | 3:2 |
| B. | 9:4 |
| C. | 2:3 |
| D. | 4:9 |
| Answer» D. 4:9 | |
| 8. |
On which of the factors does the co-efficent of bend in a pipe depend? |
| A. | angle of bend and radius of curvature of the bend |
| B. | angle of bend and radius of the pipe |
| C. | radius of curvature of the bend and pipe |
| D. | radius of curvature of the bend and pipe and angle of bend |
| Answer» E. | |
| 9. |
The head loss at the entrance of the pipe is that at it’s exit$ |
| A. | equal to |
| B. | half |
| C. | twice |
| D. | four times |
| Answer» C. twice | |
| 10. |
A liquid flows with the same velocity through two pipes 1 and 2 having the same diameter. If the length of the second pipe be twice that of the first pipe, what should be the ratio of the head loss in the two pipes? |
| A. | 1:2 |
| B. | 2:1 |
| C. | 1:4 |
| D. | 4:1 |
| Answer» B. 2:1 | |
| 11. |
Which one of the follflowing is correct? |
| A. | the frictional resistance depends on the nature of the surface area of contact |
| B. | the frictional resistance is independent of the nature of the surface area of contact |
| C. | the frictional resistance depends on the nature of the surface area of contact for laminar flows but is independent of the nature of the surface area of contact for turbulent flows |
| D. | the frictional resistance is independent of the nature of the surface area of contact for laminar flows but depends on the nature of the surface area of contact for turbulent flows |
| Answer» E. | |
| 12. |
The frictional resistance for fluids in motion is |
| A. | proportional to the velocity in laminar flow and to the square of the velocity in turbulent flow |
| B. | proportional to the square of the velocity in laminar flow and to the velocity in turbulent flow |
| C. | proportional to the velocity in both laminar flow and turbulent flow |
| D. | proportional to the square of the velocity in both laminar flow and turbulent flow |
| Answer» B. proportional to the square of the velocity in laminar flow and to the velocity in turbulent flow | |
| 13. |
Which property of the fluid accounts for the major losses in pipes? |
| A. | density |
| B. | specific gravity |
| C. | viscosity |
| D. | compressibility |
| Answer» D. compressibility | |
| 14. |
Which one of the following is a major loss? |
| A. | frictional loss |
| B. | shock loss |
| C. | entry loss |
| D. | exit loss |
| Answer» B. shock loss | |