Irrigation Engineering

191) In the case of a notch type of canal fall, the surplus energy is dissipated

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in the cistern

192) Syphon well drop (or cylindrical fall) in the canals is provided when the discharge in the canal

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is small but the drop is large

193) Which one of the following is different from the rest

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Asphaltic lining

194) The length of hydraulic jump will generally be

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5 to 7 times the height of the jump

195) Under siphonic action the head acting on the siphon spillway is equal to

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head water level minus the tail water level

196) The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called

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consumptive irrigation requirement

197) Hydrograph is the graphical representation

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runoff and time

198) A raingauge should preferably be fixed

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in an open space

199) A 70% index of wetness means

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rain deficiency of 30%

200) A deep well

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has more discharge than a shallow well

Subject Notes

Objective Box

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