Water Management MCQs with Answers | Agriculture – Page 4

Question 61 Water Management

What is the ratio of the rate of change of discharge through an outlet to the rate of change of water level in the distributary called?

Correct answer D. Sensitivity

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Question 62 Water Management

When the canal’s full supply level is well below the bottom of the drain, so the drain water flows freely under gravity over the canal, what is the structure called?

Correct answer B. Super-passage

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Question 63 Water Management

What structure is provided where a large canal and a big drainage channel meet at practically the same level?

Correct answer C. Level crossing

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Question 64 Water Management

What is an open cut in a canal bank, with a bed and sides, that releases canal water through a lead channel into a nearby drain called?

Correct answer A. Outlet

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Question 65 Water Management

What is the maximum permissible total dissolved solids in drinking water?

Correct answer B. 1500 mg/litre

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Question 66 Water Management

What is the property called when one soil erodes more readily than another under the same conditions?

Correct answer D. Erodibility

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Question 67 Water Management

In Darcy’s formula for head loss in pipes, hf = 4flv²/?, what is the denominator?

Correct answer A. 2gd

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Question 68 Water Management

Within what range should the velocity of flow in a sewer lie?

Correct answer D. 1 m / sec to 3m/ sec

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Question 69 Water Management

What is the digging out of earth to form a trench for engineering purposes called?

Correct answer B. Excavation

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Question 70 Water Management

Swimming pool water can be ____ using chlorine, ultraviolet rays or bromine. Which word fills the blank?

Correct answer C. Disinfected

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Question 71 Water Management

What can salts of calcium and magnesium mostly not cause?

Correct answer A. Poisoning

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Question 72 Water Management

What is an open cut in a canal bank, protected by stone pitching, that lets upland drainage water into the canal called?

Correct answer B. Inlet

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Question 73 Water Management

When the canal is carried past a drain and flows under siphonic action because of the levels involved, what is the structure called?

Correct answer A. Canal-syphon

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Question 74 Water Management

What is the cross-drainage structure called where the drain’s high flood level is well below the canal bed, so drainage water flows freely under gravity?

Correct answer C. Aqueduct

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Question 75 Water Management

When the rate of change of discharge of an outlet equals the rate of change of discharge of the channel, what is the outlet called?

Correct answer D. Proportional

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Question 76 Water Management

What is a module or outlet called whose discharge is fixed and limited regardless of fluctuations in water levels in the distributary?

Correct answer A. Modular

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Question 77 Water Management

Besides Bligh’s creep theory, which engineer’s theory is used to determine the total length of the impervious floor of a hydraulic structure?

Correct answer D. Khosla

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Question 78 Water Management

An inverted filter consists of layers of material with increasing what from bottom to top?

Correct answer C. Permeability

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Question 79 Water Management

An inverted filter is placed just after the end of a concrete floor. Which risks does it reduce?

Correct answer D. A and B are correct

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Question 80 Water Management

What is Khosla’s seepage theory for the design of hydraulic structures called?

Correct answer D. Method of independent variables

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