Irrigation Engineering Practice Test 9

1. An ungated spillway starts functioning as soon as the water level in the reservoir crosses the __________________

2. The more rapid the closure of the valve, greater is the water hammer pressure developed.

3. A shaft spillway is located _______________________

4. A siphon spillway in a concrete gravity dam is in the shape of ________________

5. On moderate foundations and particularly in seismic areas, the type of dam which can preferably be considered for construction is ___________________

6. Which of the following is the simplest type of spillway which can be provided independently and at low costs?

7. Which of the following is a secondary safety arrangement?

8. During the maintenance of an earthen dam, the apparent seepage through the foundation of the dam is best taken care of by providing ______________________

9. Which of the following plot is useful in determining the clearance for the spillway deck bridge and the top levels of walls on the side of the spillway?

10. The seepage forces within the filter are controlled up to permissible small magnitudes when the ratio of D₁₅ of filter to D₁₅ of base material is ___________________