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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Q. A trash rack is not required at the entrance of a ____________________

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Q. Bar screens used to cover dam outlets to prevent entry of debris or ice into the sluiceway conduits are called ______________

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Q. Which of the following statement is incorrect?

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Q. The flow through the penstocks and pressure conduits is generally ____________________

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Q. The head loss in the flow of water through a penstock pipe of given length ____________

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Q. Hoop’s reinforcement is provided in cement concrete pressure pipes in order to counteract the _________

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

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Q. Which of the following types of pressure conduits is preferably used for large heads?

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Q. Which head loss formula is also applicable to turbulent flow in pressure conduits?

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Q. __________________ joint is often used for connecting cast iron pipes.

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Q. Which of the following conduits is used when large diameter pipes of smaller wall thickness are required?

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