Irrigation and Drainage Engineering Quiz Notes

Introduction

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Quiz Questions and Answers

Question 1

• Question: Moisture content of the soil when the gravitational water has been removed.
• Answer: B Field capacity

Question 2

• Question: Ratio of the dry weight of soil particles to the weight of an equal volume of water.
• Answer: D Apparent-specific gravity

Question 3

• Question: Pipelines built on or near the ground surface to convey water across wide depressions.
• Answer: D Flumes

Question 4

• Question: Subsurface drain system where laterals join the submain on both sides alternately.
• Answer: B Herringbone

Question 5

• Question: Darcy's law states that the flow of water through a porous medium is.
• Answer: C Both A and B

Question 6

• Question: One liter per second is equal to.
• Answer: C 15.85 gallons per minute

Question 7

• Question: Ratio of the volume of voids to the total volume of the soil.
• Answer: C Porosity

Question 8

• Question: Water retained about individual soil particles by molecular action.
• Answer: B Hydroscopic water

Question 9

• Question: Composite parts of the irrigation system that divert water from natural sources.
• Answer: D Head works

Question 10

• Question: Measure of water retention against a tension of 15 atmospheres.
• Answer: B Permanent wilting point

Question 11

• Question: Diameter of sand as defined by the International Soil Science Society.
• Answer: B 0.2 to 2 millimeters

Question 12

• Question: 10 cubic meters per hour is equal to.
• Answer: C Both A and B

Question 13

• Question: Localized lowering of the static water level due to pumping.
• Answer: B Drawdown

Question 14

• Question: Convenient level surface coincident with mean sea level.
• Answer: A Datum

Question 15

• Question: Geologic formation transmitting water at insufficient rates for economic development.
• Answer: B Aquilude

Question 16

• Question: Ratio of the dry weight of the soil to the weight of the water of equal volume.
• Answer: D Apparent-specific gravity

Question 17

• Question: Accounts for losses in an irrigation system from the water source.
• Answer: D Conveyance efficiency

Question 18

• Question: Geologic formation containing water but not capable of transmitting it.
• Answer: D Aquilude

Question 19

• Question: Localized lowering of the static water level due to pumping.
• Answer: B Drawdown

Question 20

• Question: Recommended value for standing water during land preparation.
• Answer: B 10 millimeters

Question 21

• Question: Farm water requirement minus application losses.
• Answer: B Farm irrigation requirement

Question 22

• Question: 4 liters per second is equivalent to.
• Answer: C Both A and B

Question 23

• Question: Results from overlapping radii of influence of neighboring wells.
• Answer: C Well interference

Question 24

• Question: Infero irrigation rate of application compared to soil intake rate.
• Answer: A Less than

Question 25

• Question: Diameter of sand as described by the International Soil Science Society.
• Answer: A

Question 26

• Question: Irrigation method for row crops where only part of the surface is wetted.
• Answer: B Furrow irrigation

Question 27

• Question: Composite parts of the irrigation system that divert water from natural sources.
• Answer: D Head works

Question 28

• Question: Measure of soil's water retention against a tension of 15 atmospheres.
• Answer: B Permanent wilting point

Question 29

• Question: Infiltration equation based on exhaustion process.
• Answer: B Hortons

Question 30

• Question: Amount of drainage water to be removed per unit time per unit area.
• Answer: B Drainage coefficient

Question 31

• Question: Assumptions in Hooghouse drain spacing formula.
• Answer: D All of the above

Question 32

• Question: Mathematical expression for macroscopic flow of water through porous systems.
• Answer: B Darcy's law

Question 33

• Question: Soil moisture constant for moisture retained against suction pressure of one-third atmosphere.
• Answer: A Field capacity

Question 34

• Question: Runoff definition.
• Answer: A Difference between gross and net depth of irrigation water

Question 35

• Question: Type of sprinkler irrigation with equal installed laterals.
• Answer: D Set system

Question 36

• Question: Surface irrigation system subdivided by dikes.
• Answer: C Basin irrigation

Question 37

• Question: Distribution control structures across irrigation ditch.
• Answer: B Checks

Question 38

• Question: Not a component of impact arm of an impact sprinkler.
• Answer: A Nozzle

Question 39

• Question: Ratio of gross irrigation water to net requirement in surface irrigation.
• Answer: A Application efficiency

Question 40

• Question: Orderly sequence of planting crops in 365 days.
• Answer: A Cropping pattern

Question 41

• Question: Difference between infiltrated water depth and net depth requirement in infero irrigation.
• Answer: C Deep percolation

Question 42

• Question: Inline canal structure for conveying canal water with energy dissipation.
• Answer: A Drop

Question 43

• Question: Rainwater falling directly on the field for crop growth.
• Answer: B Effective rainfall

Question 44

• Question: Applicator in drip irrigation designed for uniform flow.
• Answer: B Emitters

Question 45

• Question: Closed conduit for conveying canal water and gravity under roadways.
• Answer: B Inverted siphon

Question 46

• Question: Water required for lowland rice production considering losses.
• Answer: B Land preparation water requirements

Question 47

• Question: Portion of the pipe network between main line and laterals.
• Answer: B Valve

Question 48

• Question: Constant flow depth along channel under uniform flow condition.
• Answer: A Normal depth

Question 49

• Question: Water flow exposed to the atmosphere such as in canals.
• Answer: A Open channel flow

Question 50

• Question: Tube or shaft for bringing groundwater into the soil surface.
• Answer: A Shallow tube well

Question 51

• Question: Ratio of horizontal to vertical dimension of channel wall.
• Answer: C Side slope

Question 52

• Question: Slope of water surface profile plus velocity head in open channels.
• Answer: A Energy grade line slope

Question 53

• Question: Slope of free water surface in open channel.
• Answer: D Hydraulic grade line slope

Question 54

• Question: Flow with constant water area, depth, discharge, and velocity.
• Answer: C Uniform flow

Question 55

• Question: Accounting of water inflows and outflows.
• Answer: B Water balance

Question 56

• Question: Area contributing runoff to a reservoir.
• Answer: A Watershed

Question 57

• Question: Diameter of area wetted by a sprinkler at given pressure.
• Answer: A Wetted diameter

Question 58

• Question: Portion of canal perimeter in contact with flowing water.
• Answer: B Wetted perimeter

Question 59

• Question: Moisture left in soil before initial irrigation delivery.
• Answer: B Residual moisture content

Question 60

• Question: Pressure required to overcome elevation differences and friction losses.
• Answer: B Design pressure

Question 61

• Question: Overflow structure to measure water flow rate.
• Answer: A Weir

Question 62

• Question: Inline structure for measuring flow in open channels.
• Answer: B Flume

Question 63

• Question: Measuring device with sharp edged opening for flow.
• Answer: C Orifice

Question 64

• Question: Device for plotting furrow depth as a function of lateral distance.
• Answer: B Prophylometer

Question 65

• Question: Application of water by gravity flow to field surface.
• Answer: A Surface irrigation

Question 66

• Question: Method where water runs through small channels down the slope.
• Answer: B Furrow irrigation

Question 67

• Question: Recommended slope for furrow irrigation method.
• Answer: A 0.05% to 3.0%

Question 68

• Question: Volume of water stored in a reservoir between minimum and normal water level.
• Answer: A Active storage

Question 69

• Question: Maximum elevation of water surface in dam without flow in spillway.
• Answer: C Normal storage elevation

Question 70

• Question: Part of water impounding system that stores runoff.
• Answer: C Dam

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Conclusion

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