Q. The selection of the CD works depends on?

i. Selecting canal alignment
ii. Position of water-table and availability of dewatering equipment
iii. Suitability of soil for embankment
iv. Availability of funds

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Q. Inlets and Outlets are inferior to aqueduct or super-passage type of work.

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Q. In order to reduce the CD works, the artificial canals are generally aligned along the ridgeline.

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Q. The type of canal alignment which involves maximum CD works is a ______________

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Q. What is Lacey’s equation for fixing the approximate value of the required waterway for the drain?

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Q. The maximum permissible reduction in the waterway from Lacey’s perimeter is _______

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Q. The permissible velocity through the barrels is generally limited to _____________

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Q. Which of the following method is applicable for the design of channel transition when the water depths of the flumed and unflumed section are the same or maybe different?

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Q. In a siphon aqueduct, the worst condition of uplift on the floor occurs when ________

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Q. To reduce the cost of the CD works we resort to _____

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Q. The greater is the fluming, the greater is the length of upstream and downstream transition wings.

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Q. Which of the following wings protect the earthen slopes of the canal and also guide the drainage water?

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Q. The head loss through a siphon barrel is usually given by Unwin’s formula by neglecting velocity of approach as HL = [1 + F₁ + F₂. L/R] V²/2g, where F₁ and F₂ respectively represent the coefficient of head losses due to?

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Q. The floor of a siphon aqueduct needs to be designed for conditions when?

i. The canal and drainage are flowing full
ii. The canal is full and there is no drainage discharge
iii. The canal is empty and drainage discharge is full

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Q. A siphon aqueduct is constructed at a canal crossing site where drainage HFL was 212.2 m by allowing an afflux of 0.4 m at high flood discharge. At this site, the water level downstream of the crossing at the same high flood will be _________

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Q. Calculate the depth of cut-off for scour holes for an irrigation channel of F.S.Q equal to 354 cumecs and H.F.Q of natural drainage equal to 600 cumecs. Assume the value of friction factor as 1.

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Q. Calculate the value of hydraulic mean radius for a channel designed by Lacey’s theory which has a mean velocity of 1m/sec. The silt factor can be taken as unity.

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Q. Which of the following is usually adopted for contraction and construction joints?

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Q. Which of the following is not a movement joint?

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Q. A partial contraction joint is the one in which?

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