Finally formed berms in canals are provided for
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Civil Engineering · all questionsIrrigation Engineering
Irrigation Engineering
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Canals constructed for draining off water from water logged areas, are known
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A hydroelectric scheme operating under a head of 80 m will be classified as
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Irrigation water having the concentration of Na++, Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as
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If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is
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A minimum of 90 cm free board is provided if the discharge in the canal is between
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If the irrigation efficiency is 80%, conveyance losses are 20% and the actual depth of watering is 16 cm, the depth of water required at the canal outlet, is
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The difference in level between the top of a bank and supply level in a canal, is called
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The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called
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The downstream expansion head of a guide bank is extended to subtend an angle at the centre, equal to
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The uplift pressure on a dam can be controlled by
i) constructing cutoff under upstream face
ii) constructing drainage channels bet-ween the dam and its foundation
iii) by pressure grouting in foundation
The corret answer is
i) constructing cutoff under upstream face
ii) constructing drainage channels bet-ween the dam and its foundation
iii) by pressure grouting in foundation
The corret answer is
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If the risk of a flood occurring in the next 10 years is accepted to 10%, then the return period for design should be
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The width of a meander belt is the transverse distance between
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Pick up the correct statement from the following:
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The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is
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The kor depth for rice is 190 mm and kor period is 14 days. The outlet factor for this will be
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The main function of a diversion head works of a canal from a river, is
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The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called
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For wave action in dams, the maximum height of freeboard is generally taken to be equal to (where hw is height of wave.)
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The intensity of irrigation means
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