Question
a.
Single burnt clay tile lining or brick lining
b.
PCC slab lining
c.
Flexible membrane lining with adequate earth/tile cover
d.
In-situ cement concrete lining in bed as well as on sides
Posted under Irrigation Engineering
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Q. Which of the following guideline is not recommended for the choice of lining when the bed width of the canal is up to 3 m?
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Q. Which of the following is not a cause for the hydrostatic pressure on the lining?
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Q. Drainage relief pockets are provided ___________
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Q. The permeability of lining is also governed by the depth of water in the canal and type of subgrade soil.
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Q. Pressure relief valves may help in ___________
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Q. Pipe drains run _______________
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Q. Which of the following statement is wrong about the requirement of good lining?
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Q. Which type of lining is adopted when the channels have become stable and no danger of scouring is expected?
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Q. Which of the following statement is incorrect about Expansive soils?
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Q. The larger the thickness of CNS introduced over the expansive soil, the more will be the resulting swelling in soil.
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Q. What is the recommended value of CNS thickness to be used for lining over expansive soil with swelling pressure of 200-300 KN/m²?
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Q. Safety ladders are generally provided on ___________
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Q. If the free swell index of soil is more than 100, the soil may be expansive.
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Q. Safety ladders are provided in large irrigation canals to ______________
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Q. CNS material shall be non-swelling with a minimum of ___________
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Q. Which of the following is incorrect about the identification of CNS material?
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