MCQOPTIONS
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MCQOPTIONS
This section includes 19 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 hydraulic radius of an economical rectangular section is 4m, calculate the discharge through the channel if the bed slope of the channel is 1 in 1000 and manning’s co efficient is 0.015. |
| A. | 680m3⁄s |
| B. | 690m3⁄s |
| C. | 700m3⁄s |
| D. | 710 m3⁄s |
| Answer» B. 690m3⁄s | |
| 2. |
The ratio between normal discharge and maximum discharge through a rectangular channel is 32:6, calculate the depth of the channel if the width of the channel is 4m and bed slope, chezy’s constant remains same. |
| A. | 1m |
| B. | 2m |
| C. | 3m |
| D. | 4m |
| Answer» B. 2m | |
| 3. |
The ratio between maximum discharge and top width of a rectangular channel is 91:50, calculate the depth of the channel if the bed slope is 1 in 3000 and C = 50. |
| A. | 2m |
| B. | 3m |
| C. | 4m |
| D. | 5m |
| Answer» B. 3m | |
| 4. |
Calculate the section factor for the most economical rectangular section having depth of 4m. |
| A. | 32 |
| B. | 64 |
| C. | 128 |
| D. | 256 |
| Answer» C. 128 | |
| 5. |
The base width of a most economical rectangular channel is 8m, calculate the hydraulic radius of the channel, |
| A. | 5m |
| B. | 4m |
| C. | 3m |
| D. | 2m |
| Answer» E. | |
| 6. |
The maximum discharge through a rectangular channel is 7.15m3⁄s, determine the depth of the channel where S0 = 1/2000 and C=40. |
| A. | 4m |
| B. | 3m |
| C. | 2m |
| D. | 1m |
| Answer» D. 1m | |
| 7. |
Calculate the maximum discharge through a rectangular channel having width of 5m, bed slope of 1 in 500 and manning’s co efficient is 0.020. |
| A. | 33.43m3⁄s |
| B. | 32.43m3⁄s |
| C. | 31.43m3⁄s |
| D. | 30.43m3⁄s |
| Answer» C. 31.43m3⁄s | |
| 8. |
THE_RATIO_BETWEEN_MAXIMUM_DISCHARGE_AND_TOP_WIDTH_OF_A_RECTANGULAR_CHANNEL_IS_91:50,_CALCULATE_THE_DEPTH_OF_THE_CHANNEL_IF_THE_BED_SLOPE_IS_1_IN_3000_AND_C_=_50.?$ |
| A. | 2m |
| B. | 3m |
| C. | 4m |
| D. | 5m |
| Answer» B. 3m | |
| 9. |
CALCULATE_THE_SECTION_FACTOR_FOR_THE_MOST_ECONOMICAL_RECTANGULAR_SECTION_HAVING_DEPTH_OF_4M.?$ |
| A. | 32 |
| B. | 64 |
| C. | 128 |
| D. | 256 |
| Answer» C. 128 | |
| 10. |
The hydraulic radius of an economical rectangular section is 4m, calculate the discharge through the channel if the bed slope of the channel is 1 in 1000 and manning’s co efficient is 0.015.$# |
| A. | 680m<sup>3</sup>‚ÅÑs |
| B. | 690m<sup>3</sup>‚ÅÑs |
| C. | 700m<sup>3</sup>‚ÅÑs |
| D. | 710 m<sup>3</sup>‚ÅÑs |
| Answer» B. 690m<sup>3</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´s | |
| 11. |
The ratio between normal discharge and maximum discharge through a rectangular channel is 32:6, calculate the depth of the channel if the width of the channel is 4m and bed slope, chezy’s constant remains same.$# |
| A. | 1m |
| B. | 2m |
| C. | 3m |
| D. | 4m |
| Answer» B. 2m | |
| 12. |
The base width of a most economical rectangular channel is 8m, calculate the hydraulic radius of the channel? |
| A. | 5m |
| B. | 4m |
| C. | 3m |
| D. | 2m |
| Answer» E. | |
| 13. |
The maximum discharge through a rectangular channel is 7.15m3‚ÅÑs, determine the depth of the channel where S0 = 1/2000 and C=40.$ |
| A. | 4m |
| B. | 3m |
| C. | 2m |
| D. | 1m |
| Answer» D. 1m | |
| 14. |
Calculate the maximum discharge through a rectangular channel having width of 5m, bed slope of 1 in 500 and manning’s co efficient is 0.020.$ |
| A. | 33.43m<sup>3</sup>‚ÅÑs |
| B. | 32.43m<sup>3</sup>‚ÅÑs |
| C. | 31.43m<sup>3</sup>‚ÅÑs |
| D. | 30.43m<sup>3</sup>‚ÅÑs |
| Answer» C. 31.43m<sup>3</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´s | |
| 15. |
Calculate the maximum discharge through a rectangular channel having depth 3m, bed slope of 1 in 1000. |
| A. | 33.85m<sup>3</sup>/s |
| B. | 34.85m<sup>3</sup>/s |
| C. | 35.85m<sup>3</sup>/s |
| D. | 36.85m<sup>3</sup>/s |
| Answer» C. 35.85m<sup>3</sup>/s | |
| 16. |
Calculate the hydraulic radius for the most economical rectangular section having depth y and width B. |
| A. | y/2 |
| B. | y |
| C. | 2y |
| D. | 3y |
| Answer» B. y | |
| 17. |
The depth and widths of a rectangular channel section are y and B respectively, determine the economical perimeter of the section. |
| A. | y |
| B. | 2y |
| C. | 3y |
| D. | 4y |
| Answer» E. | |
| 18. |
A rectangular channel section has depth y and width B, calculate the most economical area of the channel. |
| A. | 2y<sup>2</sup> |
| B. | y<sup>2</sup> |
| C. | By |
| D. | B<sup>2</sup> |
| Answer» B. y<sup>2</sup> | |
| 19. |
For a channel to be economic which of the following parameters should be minimum. |
| A. | Wetted perimeter |
| B. | Wetted area |
| C. | Section factor |
| D. | Hydraulic depth |
| Answer» B. Wetted area | |