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GATE CE 2020: Hydrology & Irrigation Quiz 6

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Question 1

The method of irrigation adopted at places where there exists acute scarcity of irrigation water is:

Question 2

On rolling land, the method of applying water is ______.

Question 3

A sandy loam soil has a water holding capacity of 140 mm/m between field capacity and wilting point. The area to be irrigated is 60 ha and depth of effective root zone is 0.30 m. The management allowed soil moisture depletion as 40% and the consumptive use is 6 mm/day. The conveyance and application efficiency are obtained to be 80% and 50% respectively. There are no leaching requirements as well as no rainfall and ground water contributions to the crop water requirement. The frequency of irrigation (in days) and the field irrigation requirement (in m³) will be

Question 4

In a certain situation, wastewater discharged into a river, mixes with the river water instantaneously and completely. Following is the data available
Waste water: DO = 2.00mg/L
Discharge rate = 1.10m³/s
River water: DO = 8.3 mg/L
Flow rate = 8.70 m³/s
Temperature = 20 °C
Initial amount of DO in the mixture of waste and river shall be

Question 5

Which type of drainage system will collect the rainwater?

Question 6

Match the following
Group 1
P. Release valve
Q. Check valve
R. Gate valve
S. Pitot valve
Group 2
(1). Reduce high inlet pressure to lower outlet pressure
(2). Limit the flow of water to single direction
(3). Remove air from the pipeline
(4). Stopping the flow of water in the pipeline

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ESE & GATE CE Irrigation Engineering

Nov 24ESE & GATE CE