Q. The lowest portion of the capacity-elevation curve of a proposed irrigation reservoir draining 20 km² of catchment is represented by the following data:

i. The rate of silting for the catchment = 300 m³ / km² / year
ii. Life of the reservoir = 50 years
iii. Dead storage = 30
iv. The FSD of the canal at the head = 80 cm
v. The crop water requirement = 250 ha.m
vi. Dependable yield of the catchment = 0.29 m

Calculate the gross capacity of the reservoir.

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Q. As the height of a proposed dam is increased, the cost per unit of storage initially increases and then decreases.

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Q. The economical height of a dam is that height for which the ____________________

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Q. If 20% of the reservoir capacity is earmarked for dead storage in a storage reservoir of 30 M.cum and the average annual silt deposition in the reservoir is 0.1 M cum, then the useful life of the reservoir will start reducing after ____________

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Q. According to the Central Water Commission, the average annual evaporation loss is estimated to be _____________

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Q. Windbreakers, Integrated operation of reservoirs and Use of underground storage are all methods of ______________________

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Q. Which of the following is not used as WERs?

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Q. Which of the following dam is situated in the seismologically inactive zone in Peninsular India?

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Q. Which of the following measure does not prevent or reduce the intensity of the earthquake?

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Q. Which of the following guideline is incorrect for the selection of a suitable site for a reservoir?

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Q. The bar screens used to cover the dam outlets to prevent entry of debris, or ice into the spillway conduits are called __________________

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Q. Projecting collars are provided on sides of a rectangular tunnel of length L made through an earthen dam to increase the seepage path. Their projection length (X) and numbers (N) are decided so as to provide increased seepage path equal to 2NX where 2NX should generally be ______________________

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Q. The outlet provided in a dam body to release water for the downstream water demand is known as ______________________

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Q. A 2 m diameter sluiceway at RL 300 m is provided through a concrete overflow dam section to release water to the downstream where tail water level is not more than 275 m. The discharge through this outlet when the water level in the reservoir is at FRL of 330 m is of the order of_________________

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Q. A 4 m diameter tunnel has been constructed through an earthen dam with a bell mouth entry. The water levels on the U/s and D/s sides of the dam are at RL 226 m and 210 m respectively. What will be the discharge through this outlet?

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Q. Which of the following entrance of the sluiceway is most superior?

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Q. What is the correct Douma’s equation for rectangular tunnels or conduits?

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Q. What is the value of head loss for the fully open gate and butterfly valves?

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Q. River intakes is usually situated on ____________________

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Q. Which of the following intake structure is widely used in small works?

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