MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Irrigation Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate the effective length of the spillway which consists of 6 spans having a clear width of 10 m each. The thickness of each pier may be taken as 2.5 m and the total design head on the crest including velocity head is 16.3 m. Assuming 90 cut water nose piers and rounded abutments. |
| A. | 55 m |
| B. | 60 m |
| C. | 65 m |
| D. | 75 m |
| Answer» B. 60 m | |
| 2. |
The greater is the divergence from the streamline flow, greater is the contraction coefficient. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
What is the assumption that is taken during the entire design of an overflow spillway? |
| A. | The upper and lower nappe is subjected to negative pressures |
| B. | The upper and lower nappe is subjected to full atmospheric pressure |
| C. | The upper and lower nappe is subjected to zero atmospheric pressure |
| D. | The upper and lower nappe is subjected to both positive and negative pressure |
| Answer» C. The upper and lower nappe is subjected to zero atmospheric pressure | |
| 4. |
What is the value of abutment contraction coefficient for square abutment with headwall perpendicular to the direction of flow? |
| A. | 0.2 |
| B. | 0.1 |
| C. | 0.02 |
| D. | 0.01 |
| Answer» B. 0.1 | |
| 5. |
What is the value of the pier abutment coefficient for pointed nose piers? |
| A. | 0.1 |
| B. | 0.02 |
| C. | 0.01 |
| D. | 0.0 |
| Answer» E. | |
| 6. |
The downstream apron of the ogee spillway is found to have a negligible effect on the coefficient of discharge when the value of ________________ |
| A. | (H<sub>d</sub> + d) / H<sub>e</sub> is less than 1.7 |
| B. | (H<sub>d</sub> + d) / H<sub>e</sub> exceeds 1.7 |
| C. | (H<sub>d</sub> + d) / H<sub>e</sub> is equal to 1 |
| D. | (H<sub>d</sub> + d) / H<sub>e</sub> is less than 1.33 |
| Answer» C. (H<sub>d</sub> + d) / H<sub>e</sub> is equal to 1 | |
| 7. |
If a flood enters a dam reservoir at F.R.L, the efficiency of its ogee spillway will ______________ |
| A. | increase with the increasing head |
| B. | reduce with the increasing head |
| C. | remain constant with the increasing head |
| D. | vary with the increasing head |
| Answer» B. reduce with the increasing head | |
| 8. |
The velocity of approach has found to be negligible effect upon discharge if ____________ |
| A. | the ratio H/H<sub>d</sub> is more than 1.33 |
| B. | the ratio H/H<sub>d</sub> is less than 1.33 |
| C. | the ratio H/H<sub>d</sub> is equal to zero |
| D. | the ratio H/H<sub>d</sub> is more than 1 |
| Answer» B. the ratio H/H<sub>d</sub> is less than 1.33 | |
| 9. |
When the gated sluices are provided through the body of the dam spillway then the ogee spillway structure shall normally be of Corbel type. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
When the crest of an ogee spillway is designed to be in accordance with the lower nappe of a free-falling water jet over a duly ventilated sharp-crested weir then theoretically |
| A. | The pressure on the spillway crest will be zero at design head only |
| B. | The pressure on the spillway crest will always be zero |
| C. | The pressure on the spillway crest will always be negative |
| D. | The pressure on the spillway crest will be always positive |
| Answer» B. The pressure on the spillway crest will always be zero | |
| 11. |
The discharge passing over an ogee spillway per unit length of its apex line is proportional ___________________ |
| A. | H |
| B. | H<sup>2</sup> |
| C. | H<sup>1/2</sup> |
| D. | H<sup>3/2</sup> |
| Answer» E. | |