List of top Water Science and Technology Questions on Irrigation Engineering asked in ICAR AIEEA (PG)

Given below are two statements :
Statement (I) : Pricing of water on volumetric basis helps to incentivize water conservation, improve water use efficiencies and restrict overuse of water.
Statement (II) : Pricing water on volumetric water supply basis requires huge investments in irrigation water supply infrastructure including water measurement structures, development of operational plans and revenue collection procedures.
In light of the above statements, choose the most appropriate answer from the options given below.

Identify the correct option for which Haryana/Punjab, Preservation of Sub-soil Water Acts 2009 have been enacted :

Which of the following statement related to pump Head versus Discharge characteristic curve is NOT true ?

Given below are two statements :
Statement (I) : When two pumps are installed in series, discharge remaining the same, water is lifted to greater height compared to a single pump.
Statement (II) : When two pumps are installed in parallel then not only the discharge increases but water is also lifted to greater height compared to a single pump.
In light of the above statements, choose the most appropriate answer from the options given below.

A centrifugal pump runs at 1500 revolution per minute (RPM) and delivers water against a head of 10 m. What would be the head developed if the pump is operated at 1650 RPM ?

A total station in drainage investigations is used to

Arrange the followings irrigation methods in ascending order (low to high) of their irrigation use efficiencies.
(A) Border irrigation
(B) Sprinkler irrigation
(C) Drip irrigation
(D) Flood irrigation
Choose the correct answer from the options given below :

A tube well is used to irrigate the field. It pumps 9000 m³ of water, out of which 8100 m³ reaches the field head. Calculate the farm irrigation system efficiency, if the irrigation water application efficiency is 60%.

Four distinct growth stages are used to estimate crop evapotranspiration for which crop coefficients vary from one stage to another. In general the highest crop coefficient is at the stage :

Given below are four soil moisture constants
(A) Field capacity moisture content
(B) Saturation moisture content
(C) Hygroscopic moisture content
(D) Permanent wilting point
Choose the correct combination from the options given below that is used to calculate the total plant available water :

In water pumping terminology, acronym NPSHA stands for :

Followings are the statements related to water saving in drip irrigation. Identify the statement that is NOT correct.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Surface irrigation methods are the oldest, most commonly used methods and may continue to dominate irrigation scene in India.
Reason (R) : Farmers are quite familiar with surface irrigation being traditional in nature, easy to practice even with limited resources.
In light of the above statements, choose the most appropriate answer from the options given below.

Following are the statements pertaining to power in pumps :
(A) The efficiency of any given pump (\(\eta\)) is a ratio defined as the water horsepower out divided by the mechanical horsepower into the pump
(B) No pump can convert all of its mechanical power into water power
(C) Mechanical power is lost in the pumping process due to friction and other physical losses
(D) It is because of these losses that the horsepower going into the pump must be greater than the water horsepower leaving the pump
Choose the correct answer from the options given below:

For upland rice, the crop coefficient generally given for initial stages of rice crop need to be reduced by :

A farmer has 4000 \(\text{m}^2\) area. How much water is required for irrigation to be applied at 5 cm depth ?

The yield of many crops is restricted at what range of electrical conductivity of the saturation extract of a soil :

At what value of sodium adsorption ratio, a soil is considered as Alkali soil :

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : High concentration of sodium in irrigation water is not desirable.
Reason (R) : It causes deflocculation of soil aggregates and seals the pores.
In light of the above statements, choose the correct answer from the options given below.

If irrigation water contains carbonate, bicarbonates, calcium and magnesium ions as 4.0, 2.0, 2.5 and 1.5 me/L^-1, respectively, then the residual sodium carbonate content of irrigation water is:

The concentration of salt in the irrigation water having EC of 20 dS/m is :

Given below are two statements:
Statement I: Crop coefficient (Kc) values are important for estimation of crop water requirement and water requirement varies from crop to crop.
Statement II: The value of Kc increases with duration of the crops.
In light of the above statements, choose the correct answer from the options given below:

If net irrigation for a crop is 8 cm and field efficiency is 75%, then gross irrigation depth to be applied will be