Q. The siphons installed within a gravity dam to spill the surplus reservoir water are known as ______________________

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Q. The siphons installed over overflow dams constitute what are known as __________________

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Q. The only spillway among the following through which the discharge does not increase as fast as it increases in all others is _________________

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Q. The only spillway among the following through which the discharge is almost at its capacity rate even from the start of its functioning is ________________

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Q. An air vent is provided at FRL to break the siphoning action at that level in a ___________________

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Q. Which of the following spillway is designed in India by Ganesh Iyer?

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Q. The crest of a siphon spillway is fixed at ________________

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Q. A siphon spillway is sufficiently independent of the water surface elevation of the reservoir.

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Q. The allowable maximum negative head on an average is equal to __________

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Q. The structure which is not used in a shaft spillway is ________________

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Q. Morning glory is the _____________________________

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Q. For a saddle siphon, the maximum operative head is 4.53 m. The width and height of the throat of the siphon are 5 m and 2.25 m respectively. The coefficient of discharge is 0.90. How many units are required to pass a flood of 350 cumecs? (Assume g = 10 m/s2)

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

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Q. The energy dissipation at the toe of the spillway is affected basically by the use of hydraulic jump in _______________________

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Q. The most ideal condition for energy dissipation in the design of spillways is the one when the tail-water rating curve coincides with the jump rating curve at all discharge.

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Q. When the tail-water depths in the river downstream of a spillway are quite low such that the tail-water curve at all discharges lies below the post jump depth curve, then the energy dissipation can be affected best by ___________________

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Q. The device which does not help in energy dissipation at the bottom of a hydraulic structure over which water spills is ________________

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Q. The formation of hydraulic jump at the foot of a spillway is one of the common methods of energy dissipation because ______________________

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Q. A ski-jump bucket is also known as _____________________

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Q. The percentage of energy dissipation in a hydraulic jump increases with the increase in the Froude number.

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