Irrigation Questions

• Borrow pits should preferably be located in
• If L is total length of a canal in kilometres, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is
• For designing the venturi head,
• When a canal is carried over a natural drainage, the structure provided, is known as
• Attracting groynes are built
• Pick up the incorrect statement from the following
• The saturation line is the line up to which banks get saturated after the canal runs for some time. The saturation gradient in ordinary loam soil, is generally
• Pick up the correct statement from the following
• The crest level of a canal diversion head work, depends upon
• The top soil of a water logged field becomes more alkaline and infertile if its pH value is
• Irrigation canals are generally aligned along
• The measure to remove water logging of land, is
• Retrogression of the bed level of a river downstream a weir, occurs due to
• The depth of the crest of a scouring sluice below the crest of a head regulator, is generally kept
• For a given discharge in a channel, Blench curves give the relationship between the loss of head (HL) and
• Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less
• The sinuosity of a meander is the ratio of
• Pick up the correct statement from the following
• In a canal syphon, the flow is
• Water-shed line is abondened for aligning an irrigation canal if