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Irrigation, Water Resources Engineering and Hydrology

Free 136+ Irrigation, Water Resources Engineering and Hydrology MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Practise below with answers and explanations.

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Irrigation, Water Resources Engineering and Hydrology — MCQs for Pakistan government job tests

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Irrigation, Water Resources Engineering and Hydrology

Practice questions

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1.Consider the following statements regarding river engineering structures:

Statements (1) and (2)Statements (1) and (4)Statements (2) and (3)Statements (3) and (4)None of the above

2.Which of the following statements is accurate regarding river meanders and cutoffs?

A meander lengthens the river's course, whereas a cutoff shortens it.A cutoff extends the river's length, while a meander shortens it.Both meanders and cutoffs result in a longer river path.Both meanders and cutoffs cause the river length to decrease.

3.Which of the following statements is false?

Avoid heavy irrigation in regions prone to water logging.Use light irrigation methods in areas likely to experience water logging.Lift irrigation contributes to the problem of water logging.All the above statements are correct.

4.The instantaneous unit hydrograph represents a hydrograph corresponding to which of the following conditions?

Unit time interval and unit excess rainfallUnit time interval and infinitesimal rainfall excessUnit excess rainfall and infinitesimally small durationInfinitesimally small duration and infinitesimal rainfall excessNone of the above

5.Which data is necessary to calculate the discharge at a stream section using its rating curve?

Both the water surface slope and stage at the sectionStage at the section and current meter measurementsStage measurement alone at the sectionOnly current meter readings at the sectionNone of the above

6.Interception losses occur as a result of which of the following processes?

only evaporationevaporation and transpirationevaporation and stream flowevaporation, transpiration, and stream flow

7.In which areas is rainfall variability the greatest?

Exclusively in regions with heavy precipitationBoth areas with heavy rainfall and coastal zonesExclusively in regions with low rainfallBoth coastal zones and areas with low precipitation

8.How does the presence of tail water affect the stresses in a gravity dam?

Statements (1) and (3) are trueStatements (1) and (4) are trueStatements (2) and (3) are trueStatements (2) and (4) are true

9.Which forces are taken into account when analyzing a basic section of a gravity dam with the reservoir empty?

Only the self-weight force (2)Water pressure (1), self-weight (2), and uplift force (3)Water pressure (1), self-weight (2), and earthquake pressure (4)Water pressure (1), self-weight (2), uplift force (3), and earthquake pressure (4)

10.Which of the following conditions cause the evaporation rate from a water surface to rise?

Both (1) and (2)Both (2) and (3)Both (1) and (3)All of (1), (2), and (3)None of the above

11.Given a kor depth of 190 mm and a kor period of 14 days for rice cultivation, what is the corresponding outlet factor?

637 hectares per cubic meter per second837 hectares per cubic meter per second972 hectares per cubic meter per second1172 hectares per cubic meter per second

12.What is the ideal depth of kor watering recommended for rice cultivation?

135 millimeters165 millimeters190 millimeters215 millimeters

13.Which irrigation technique is suitable for use on sloping terrain?

border floodingcheck floodingfurrow irrigationuncontrolled flooding

14.What term describes the ratio of the amount of water retained in the crop root zone to the total water supplied in the field?

Efficiency of water transportWater application efficiencyEfficiency of water utilizationNone of these

15.What term describes the volume of irrigation water needed to satisfy the crop's evapotranspiration demand throughout its entire growth period?

usable rainfallwater consumed by the cropconsumptive irrigation requirementminimum irrigation neededgross irrigation demand

16.What does a hydrograph typically illustrate in graphical form?

The relationship between runoff and timeThe connection of surface runoff with timeThe variation of groundwater flow over timeThe pattern of rainfall over a period

17.What term describes the amount of water needed to raise the soil moisture content to its field capacity?

Water bound to soil particlesMoisture equivalentSoil moisture deficitSurface film water

18.What does infiltration refer to in soil science?

The process of water passing through the soil layersThe uptake of water by the soil surfaceBoth the passage and uptake of water by soilNone of the above

19.What causes the uplift of an air mass leading to cyclonic precipitation?

Differences in atmospheric pressureVariations in temperaturePresence of natural landformsCombination of all the above factors

20.Where is the ideal location to install a raingauge?

Close to a structureBeneath a tree canopyIn an unobstructed open areaInside an enclosed space

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How to prepare with Irrigation, Water Resources Engineering and Hydrology MCQs

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