Irrigation Engineering
The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called

Super-aqueduct
Syphon aqueduct
Syphon
Super passage

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Irrigation Engineering
For designing the venturi head,

Length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
Minimum throat width should not be less than 60 cm
Width of the throat should not be less than one-third of the bed width of main canal
All listed here

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Irrigation Engineering
Pick up the correct statement from the following mention

Hygroscopic water remains attached to soil molecules by chemical bond
All of these
Capillary moisture held in the soil pores against gravity by surface tension, is utilised by plants
Gravity water is harmful to crops

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Irrigation Engineering
Assertion A : To estimate the rainfall over a catchment, the number of raingauges required per unit area is large for hilly areas.Reason R : Rainfall gradient is steep.Select your correct answer according to the coding system given below :

Both A and R are true and R is the correct explanation of A
A is true but R is false
A is false but R is true
Both A and R are true but R is not the correct explanation of A

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