Q. Which of the following gate works on the principle of counterweights against the water pressure?

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Q. Which one of the following gate is not suitable for curved crests?

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Q. Which of the following gate is also called flush boards?

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Q. The working of Reinold’s gate is automatic.

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Q. The most common vertical lift gates in modern days is _________________

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Q. An ogee spillway of a concrete gravity dam having FRL of 328 m and MWL of 340 m is provided with vertical gates between piers erected on the spillway. The effective length of the spillway is 60 m. The discharge through the spillway when gates are opened up to the actual reservoir level of 331.0 m will be_____________

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Q. The spillway gate which when lowered cannot be seen from a distance is of the type ______________________

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Q. In the vertical Stoney spillway gate, the rollers are placed between the ______________

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Q. In a fixed roller of a spillway gate, the rollers are attached to the __________________

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Q. Which of the following helps in dissipating the residual energy and to reduce the length of the jump or the basin?

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Q. _____________________ are suitable only for low spillways or weirs.

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Q. In the case of dam spillways, the approaching Froude number usually lies in the range of __________

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Q. Standard stilling basin is provided at the toe of a dam spillway for energy dissipation is usually provided with auxiliary devices like chute blocks and dentated sills for the basic purpose of reducing the length of the stilling basin from about ________________

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Q. The Froude number of a hydraulic jump is 5.5. The jump can be classified as ____________

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Q. Which of the following stilling basin is applicable to only rectangular cross-sections?

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Q. When the Froude number is in the range of 2.5 to 4.5, the jump is ____________________

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Q. Standard USBR stilling basin-II is useful for energy dissipation at the bottom of the overflow structure, if the approaching Froude number is ________________

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Q. A very steady and stable hydraulic jump is usually formed in the flows involving the approaching Froude number in the range of _____________________

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Q. A troublesome and oscillating hydraulic jump is normally met in cases of _____________

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Q. When the TWC lies below the JHC at all discharges, the problem can be solved by which of the following provisions?

i. Constructing a sloping apron above the river bed
ii. Provision of roller bucket type of energy dissipator
iii. Provision of a ski-jump bucket
iv. A sloping apron below the river bed
v. Construction of a subsidiary dam
vi. A sloping apron partly above and partly below the river bed

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