What is the height between the top of an embankment and the normal water level in a canal, dam or reservoir, allowing small waves to splash without overflowing, called?
Correct answer A. Free board
Topic / 284 questions
Water Management MCQs
Page 12 of Water Management multiple-choice questions with answers. Tap an option to check yourself.
Page 12 of 15
What is the minimum moisture content at which a drop of water placed on a smooth soil surface is not absorbed immediately?
Correct answer B. Soil moisture content
What are the lines joining points of equal water head and pressure in soil beneath a retaining structure called?
Correct answer C. Equipotential lines
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Which law states that the discharge of subsoil water is directly proportional to the head loss and the area of the soil sample, and inversely proportional to its length?
Correct answer B. Darcy's law
What is cultivation on small level steps cut into steep land called?
Correct answer C. Terrace farming
On a contour map, what is the line set out on the ground at a constant slope between certain points called?
Correct answer D. Contour gradient
What is an engineer engaged by a client to design hydraulic structures such as a dam, barrage or regulator called?
Correct answer B. Consulting Engineer
When does sliding failure occur in a solid gravity dam?
Correct answer C. Shear friction factor is less than 1.5
Delta is the total depth of water a crop needs from sowing to harvest. What is the delta of sugarcane?
Correct answer A. 120 cm
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Delta is the total depth of water used by a crop from first watering to maturity. What is the delta for rice?
Correct answer B. 120cm
In which season are Rabi crops grown?
Correct answer C. Winter season
Which feature develops in a river as a result of meandering?
Correct answer C. Cutoff
Why are weep holes provided in canal linings?
Correct answer C. To provide drainage
Which season begins on 1 October and ends on 31 March, lasting 182 days?
Correct answer B. Rabi season
Which crop is ideal for irrigation with wastewater or sewage?
Correct answer A. Banana
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When the reservoir is full, where is the maximum compressive stress produced in a gravity dam?
Correct answer D. At the toe
In canal or river embankments, earth is laid in layers of set thickness at a particular moisture content and consolidated. What is this process called?
Correct answer C. Densification
What is the main feature of a watershed canal?
Correct answer D. Avoids the cross drainage works
Why is the duty of well water higher than that of canal water?
Correct answer D. Conveyance losses in well irrigation are less
Which of these crops is a cash crop?
Correct answer A. Cotton