Home» Online Test » Civil Engineering » Irrigation Engineering Online Test » Paper 1 » Paper 2 » Paper 3 0% Sorry, time's up. To complete the online test, please restart it. Created by Vikash chaudhary This is a FREE online test. Beware of scammers who ask for money to attend this test. Get fresh, new questions in each attempt. Total Questions: 30 Time Allotted: 30 minutes Passing Score: 50% Randomization: Yes Certificate: No Do not refresh the page! 👍 All the best! 1 / 30 1. According to Lacey's theory, the depth of scour in the case of a right-angle bend is a) 1.414D b) 1.667D c) 2D d) 2.5D 2 / 30 2. For the upstream face of an earthen dam, the most adverse condition for the stability of slope is a) steady seepage b) sudden draw down c) sloughing of slope d) none of the above 3 / 30 3. For economical design of a gravity dam, the shear friction factor should be a) 0.65 b) 1 c) between 1 and 2 d) none of the above 4 / 30 4. *Drain over the irrigation canal is achieved by providing a) a siphon b) super passage c) an aqueduct d) both (a) and (b) above 5 / 30 5. Boulder lining is useful where a) the groundwater level is above the bed of the canal b) prevention of erosion is required c) both (a) and (b) above d) none of the above 6 / 30 6. The velocity at which eddies in the flow die out is called a) critical velocity b) lower critical velocity c) higher critical velocity d) none of the above 7 / 30 7. A repelling groyne is aligned a) parallel to bank b) perpendicular to bank c) pointing up stream d) pointing down stream 8 / 30 8. *The maximum failure of earthen dams occurs due to a) erosion due to the velocity of water b) slipping due to steeper slopes c) over topping due to insufficient height d) leakage due to cavities 9 / 30 9. *Pick up the correct sequence of the parts of a canal system a) head works - distributary - branch canal - minor b) head works - main canal - branch canal - minor - distributary c) head works - main canal - branch canal - distributary - minor d) head works - branch canal - main canal - distributary 10 / 30 10. *The crops require maximum water during a) first watering when the crop has grown a few centimeters b) first watering before sowing the crops c) last watering before harvesting d) all of the above 11 / 30 11. Top of the weir is, a) ridgecrest b) crest c) head d) peak 12 / 30 12. Crop ratio is the ratio of area irrigated a) in rabi season to kharif season b) in kharif season to rabi season c) under perennial crop to total crop d) under perennial crop to non-perennial crop 13 / 30 13. The upstream face of an earthen dam is a) a flow line b) a phreatic line c) a cubic parabola d) none of the above 14 / 30 14. The time (generally in days) for which a crop occupies a field to attain its maturity is known as a) duty b) base period c) delta d) yield period 15 / 30 15. The discharge capacity of the undersluice is a) twice the maximum discharge of the off-taking canal b) 20% of maximum flood discharge c) maximum winter discharge d) greatest of all of the above 16 / 30 16. *Hydrograph is the graphical representation of a) river runoff and time b) surface runoff and time c) groundwater and time d) rainfall and time 17 / 30 17. Bed bars provided in a canal are made of a) cement concrete b) brick masonry c) iron rod d) both (a) and (b) above 18 / 30 18. *When the bed level of the canal is higher than the HFL of the drainage, then the cross drainage work is known as a) an aqueduct b) syphon aqueduct c) canal syphon d) super passage 19 / 30 19. According to Khosla's theory, the undermining of the floor starts from the a) tail end b) starting end c) intermediate point d) foundation bed 20 / 30 20. *The total depth of water required by a crop during the entire period the crop is in the field is known as a) Crop ratio b) Crop intensity c) Delta d) Duty 21 / 30 21. The aqueduct or super passage type of cross drainage headworks are used when a) high flood drainage discharge is small b) high flood drainage discharge is large and short-lived c) high flood drainage discharge is large and continues for a long time d) none of the above 22 / 30 22. Trap efficiency of a reservoir is a function of a) capacity/Inflow ratio b) capacity/outflow ratio c) the total inflow d) age of the reservoir 23 / 30 23. The type of fall suitable for any discharge is a) vertical type b) straight glacis fall with baffle wall c) straight glacis fall without a baffle wall d) all of the above 24 / 30 24. A straight or curved retaining wall with its profile gradually changing from one slope to another is called a) curtain wall b) back wall c) flarred wall d) parapet wall 25 / 30 25. The overflow of a spillway in the shape of a double or s-curve, which is convex at the top and concave at the bottom, is called a) ogee spillway b) s-spillway c) oval spillway d) zig-zag spillway 26 / 30 26. *A silt regulator located at the head of a channel is called a) silt ejector b) silt excluder c) silt sweeper d) silt washer 27 / 30 27. When the reservoir is full, the maximum compressive force in a gravity dam is produced a) at the heel b) at the toe c) at the center of the base d) within the middle third of the base 28 / 30 28. In a gravity dam, the main overturning force is a) self-weight of the dam b) wind pressure c) water pressure d) uplift pressure 29 / 30 29. According to Lacey's regime theory, a channel is said to be in its regime when it satisfies the condition a) discharge is constant b) silt grade and silt charge are constant c) the channel is flowing in incoherent unlimited alluvial soil of the same nature as that transported d) all of the above 30 / 30 30. *The main function of the diversion headworks of a canal from a river is a) to remove silt b) to control floods c) to store water d) to raise water level Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score is Share your achievement! 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