# SSC JE Civil Engineering Preliminary Exam in January 2018 | Practice test Day – 45

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A deficit of sediments in flowing water may cause a river

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

According to Khosla, the exist gradient of surface flow

Meandering of a river generally occurs, in

The most suitable location of a canal head work, is

In a barrage, the crest level is kept

Bligh's theory of seepage assumes

A fall in a canal bed is generally provided, if

If the optimum depth of kor watering for a crop is 15.12 cm, the outlet factor for the crop for four week period in hectares per cumec, is

The length and width of a meander and also the width of the river, vary roughly as

In north Indian Plains, optimum depth of kor watering for wheat, is

According to Bligh's creep theory, percolating water flows along

For a standing crop, the consumptive use of water is equal to the depth of water

The optimum depth of kor watering for a rice crop, is

The useful moisture of soil, is equal to its

The Lacey's regime velocity is proportional to

The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to

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

The field capacity of a soil is 25%, its permanent wilting point is 15% and specific dry unity weight is 1.5. If the depth of root zone of a crop, is 80 cm, the storage capacity of the soil, is

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

The down stream expansion head of a guide bank is extended to subtend an angle at the centre, equal to

The state of the soil when plants fail to extract sufficient water for their requirements, is

A hydraulic jump is generally formed when a stream moving with

In gravity canals, F.S.L. is

Canals taken off from ice-fed perennial rivers, are known

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