MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
Relative roughness is_________ |
| A. | ϵ/D |
| B. | ϵ*D |
| C. | ϵ/Dm |
| D. | ϵgD |
| Answer» B. ϵ*D | |
| 2. |
WHAT_HAPPENS_TO_THE_HEAD_LOSS_WHEN_THE_FLOW_RATE_IS_DOUBLED??$ |
| A. | Doubles |
| B. | Same |
| C. | Triples |
| D. | Four times |
| Answer» E. | |
| 3. |
Relative roughness is_________$ |
| A. | ϵ/D |
| B. | ϵ*D |
| C. | ϵ/Dm |
| D. | ϵgD |
| Answer» B. ‚âà√¨¬¨¬µ*D | |
| 4. |
What are the reasons for minor head loses in a pipe? |
| A. | Friction |
| B. | Heat |
| C. | Valves and bends |
| D. | Temperature |
| Answer» D. Temperature | |
| 5. |
The formula for hydraulic diameter is______ |
| A. | 4A/P |
| B. | 4AP |
| C. | 4AV |
| D. | 4V |
| Answer» B. 4AP | |
| 6. |
Loss of head due to friction is __________ |
| A. | Directly proportional to hydraulic radius |
| B. | Inversely proportional to velocity |
| C. | Inversely proportional to hydraulic radius |
| D. | Directly proportional to gravitational constant |
| Answer» D. Directly proportional to gravitational constant | |
| 7. |
Which among the following is formula for friction factor of circular pipes? |
| A. | 16/Re |
| B. | 64/Re |
| C. | Re/16 |
| D. | Re/64 |
| Answer» C. Re/16 | |
| 8. |
Darcy- Weisbach equation gives relation between__________ |
| A. | Pressure and temperature |
| B. | Mass, volume and pressure |
| C. | Head loss and pressure loss |
| D. | Pressure loss only |
| Answer» D. Pressure loss only | |
| 9. |
How do we calculate losses for a larger range of Reynolds number? |
| A. | Moody chart |
| B. | Bar chart |
| C. | Scatter chart |
| D. | Column histogram |
| Answer» B. Bar chart | |
| 10. |
Which among the following is the formula for friction factor(f)? |
| A. | f = 0.079*Re<sup>0.25</sup> |
| B. | f = 0.079/Re<sup>0.25</sup> |
| C. | f = 0.079/Re<sup>0.5</sup> |
| D. | f = 0.079*Re<sup>0.5</sup> |
| Answer» C. f = 0.079/Re<sup>0.5</sup> | |
| 11. |
Which among the following does not depend on the friction factor? |
| A. | Pipe diameter |
| B. | Fluid density |
| C. | Viscosity |
| D. | Weight |
| Answer» E. | |