Q. Which of the following spillway is an improvement over free overflow spillway?

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Q. If the head of the water over the spillway is less than the design head, then ________________

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Q. The spillway which can be called as an overflow spillway is essentially ___________________

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Q. The W.E.S downstream profile of an ogee spillway can be represented by an equation:

Xⁿ = K Hdⁿ⁻¹. Y

Where x and y are the coordinates of the points on the crest profile and K and n for a vertical upstream spillway would respectively be___________________

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Q. According to US Army Corps, the u/s profile of ogee spillway extends up to _______________

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Q. 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?

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Q. What is the satisfactory radius for the reverse bottom curve which is provided at the downstream end of the spillway?

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Q. What is Bazin’s profile?

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Q. If the upstream face of the spillway is kept vertical, the crest shape should also confirm to the lower nappe of an inclined sharp-crested weir.

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Q. The discharge passing over an ogee spillway per unit length of its apex line is proportional ___________________

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Q. 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

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Q. When the gated sluices are provided through the body of the dam spillway then the ogee spillway structure shall normally be of Corbel type.

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Q. The velocity of approach has found to be negligible effect upon discharge if ____________

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Q. If a flood enters a dam reservoir at F.R.L, the efficiency of its ogee spillway will ______________

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Q. The downstream apron of the ogee spillway is found to have a negligible effect on the coefficient of discharge when the value of ________________

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Q. What is the value of the pier abutment coefficient for pointed nose piers?

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Q. What is the value of abutment contraction coefficient for square abutment with headwall perpendicular to the direction of flow?

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Q. What is the assumption that is taken during the entire design of an overflow spillway?

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Q. The greater is the divergence from the streamline flow, greater is the contraction coefficient.

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Q. 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.

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