Civil Engineering – Irrigation Engineering Mock test – 2 Welcome to your Irrigation Engineering Mock test -2 Take an exciting test in Irrigation Engineering You have only 20 mins to complete the test (25 Questions) Wish you all the best!!! Name Email A fall in a canal bed is generally provided, if A. ground slope exceeds the designed bed slope B. designed bed slope exceeds the ground slope C. ground slope is practically the same as the designed bed slope D. none of these.According to Bligh's creep theory, percolating water flows along A. straight path under the foundation of the dam B. circular path under the foundation of the dam C. the outline of the base of the foundation of the dam D. none of these.The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to A. 1 to 2 m per second B. 2 to 3 m per second C. 3 to 4 m per second D. 4 to 5 m per second.Meandering of a river generally occurs, in A. rocky stage B. delta stage C. boulder stage D. trough stage.The most suitable location of a canal head work, is A. boulders stage of the river B. delta stage of the river C. rock stage of the river D. trough stage of the river.The useful moisture of soil, is equal to its A. field capacity B. saturation capacity C. moisture content at permanent wilting point D. difference between filed capacity and permanent wilting point within the root zone of plants.A deficit of sediments in flowing water may cause a river A. meandering type B. aggrading type C. degrading type D. sub-critical type.The optimum depth of kor watering for a rice crop, is A. 23.0 cm B. 19.0 cm C. 17.5 cm D. 13.5 cmThe length and width of a meander and also the width of the river, vary roughly as A. square root of the discharge B. discharge C. square of the discharge D. cube of the discharge.Canals taken off from ice-fed perennial rivers, are known A. permanent canals B. ridge canals C. perennial canals D. inundation canalsThe structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called A. syphon B. super passage C. aqueduct D. super-aqueduct E. syphon aqueduct.Bligh's theory of seepage assumes A. equal weightage to the horizontal and vertical creep B. more weightage to horizontal creep than vertical creep C. less weightage to horizontal creep than vertical creep D. loss of head follows the sine curve.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 A. 10 cm B. 15 cm C. 20 cm D. 25 cmThe down stream expansion head of a guide bank is extended to subtend an angle at the centre, equal to A. 30° B. 45° C. 60° D. 90°For a standing crop, the consumptive use of water is equal to the depth of water A. transpired by the crop B. evaporated by the crop C. transpired and evaporated by the crop D. used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil.In gravity canals, F.S.L. is A. always at the ground level B. always below the ground level C. generally 4 to 5 metres above the ground level D. only a few cm above the ground level.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 A. 1000 B. 1200 C. 1400 D. 1600 E. 2000The Lacey's regime velocity is proportional to A. R1/2 S3/4 B. Q3/4 S1/3 C. R3/4 S1/3 D. R2/3 S1/2If 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 A. x = r1 d1 B. x = r2 d2 C. x = d1 / r1 D. x = d2 / r2A hydraulic jump is generally formed when a stream moving with A. a hyper-critical velocity meets a stream moving with a critical velocity B. a hyper-critical velocity meets a stream moving with a hyper-critical velocity C. A hyper-critical velocity meets a stream moving with a sub-critical velocity D. a sub-critical velocity meets a stream moving with a hyper-critical velocity.In a barrage, the crest level is kept A. low with large gates B. high with large gates C. high with no gates D. low with no gates.In north Indian Plains, optimum depth of kor watering for wheat, is A. 23.0 cm B. 19.0 cm C. 17.5 cm D. 13.5 cmThe 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 A. 8 cm B. 10 cm C. 12 cm D. 14 cmThe state of the soil when plants fail to extract sufficient water for their requirements, is A. maximum saturated point B. permanent wilting point C. ultimate utilisation point D. none of these.According to Khosla, the exist gradient of surface flow A. depends upon the b/d ratio B. is independent of the b/d ratio C. is independent of the depths of d/s cut off walls D. none of these.