HIGHPRIO.4 Flashcards
Refers to the number of days between irrigation periods without rainfall.
a. irrigation frequency
b. irrigation efficiency
c. Irrigation method
d. irrigation period
a. irrigation frequency
It is type of erosion where small channels are formed on the surface of the soil
a.Splash
b.rill
c.sheet
d.gully
b.rill
One in which a definite law of certainty exists
a.Stochastic process
b.Probabilistic process
c.Deterministic process
d.Barrow process
c.Deterministic process
The other term for gravity well.
a. Confined well
b. Water table well
c. Deep well
d. Well on perched aquifer
c. Deep well
A storm type occuring at the boundaries of warm moist air and dry cold air.
a.Orographic storm
b.Frontal storm
c.Convective storm
d.None of the above
b.Frontal storm
The no. of days allowed for operating irrigation to a given design area during the peak consumptive period of the crop being irrigated.
a. irrigation method
b. irrigation period
c. irrigation frequency
d. irrigation efficiency
b. irrigation period
A property associated with surface tension of liquid and manifested in the rise and fall of liquids in small diameter tubes.
a. conduction
b. capillary
c. cavitation
d. condensation
b. capillary
Amount of rainfall in the rootzone.
a. consumptive use
b. seepage
c. percolation
d. effective rainfall
d. effective rainfall
A notch of regular form through which the irrigation stream is made to
flow and flow built as either portable or stationary structures is called:
a. orifice
b. parshall flume
c. weir
d. dam
c. weir
For the most efficient circular cross-section, semi-circle the hydraulic
radius is equal to:
a. ¼ its radius
b. its radius
c. ½ its radius
d. ¼ its diameter
d. ¼ its diameter
A hydraulic structure that serves as an outlet of water in irrigation canals whereby water passes through and discharges into the main farm ditch of service area is called
a. headgate
b. checkgate
c. turnout
d. offtake
c. turnout
The amount of water used in producing crop is:
a. water holding capacity
b. critical growth stage
c. rooting characteristics
d. percolation
a. water holding capacity
Water that moves freely and drains out of the soil is:
a. gravitational
b. capillary
c. S.I.A.
d. hygroscopic
a. gravitational
In drainage, open channel is often referred to as:
a. canals
b. traps
c. manholes
d. drains
a. canals
The direct attraction of similar molecules between similar molecules.
a. collision
b. attraction
c. repulsion
d. cohesion
d. cohesion
A temporary method of drainage artificially produced in the subsoil with digging a trench from the surface.
a. canal
b. flood routing
c. transition
d. mole drain
d. mole drain
The depth of water in mm or inches to be removed in 24 hr period from the drainage area.
a. infiltration rate
b. drainage coefficient
c. infiltration
d. percolation
b. drainage coefficient
Other terms for drip irrigation are __________ irrigation and __________ irrigation. This type of overhead irrigation operates at low pressure.
a. trickle – micro
b. sprinkle – slide
c. trickle – border
d. corrugation – trickle
a. trickle – micro
It is the average interval of time within the magnitude of given event will be equaled or exceeded at least once on the average.
a. period of exceedence
b. hydrologic frequency
c. return period
d. all of the above
c. return period
Ratio of the bulk density to the density of water.
a. oven-dry weight
b. apparent specific gravity
c. soil volume
d. porosity
b. apparent specific gravity
In open channel, the term A/P is:
a. hydraulic gradient
b. hydraulic radius
c. hydraulic conductivity
d. hydraulics
b. hydraulic radius
These are usually rural traders or barrio buyers who do accumulation of the produce of individual farmers and bulk these for storage or for distribution to wholesalers
a. assemblers
b. wholesalers
c. retailers
d. agents and brokers
a. assemblers
It is used to divide and distribute the flow of water at desired direction usually placed or built in main farm ditch to divert water to supplementary farm ditches.
a.spill wall
b.turnout
c.flume
d.division box
d.division box
In designing an open channel, it is necessary to know what the material
firming the channel bed is to know the value of:
a. roughness coefficient
b. side slope
c. bed slope
d. bottom slope
a. roughness coefficient
This refers to wants for specific satisfiers backed up by an ability and willingness to buy them.
a. need
b. want
c. demand
d. value
c. demand
An irrigation method formed by building longitudinal levees approximately parallel to the contour and connecting them at a desirable places with levees
at right angle.
a. check contour
b. border
c. basin
d. furrow
a. check contour
A device used to control the flow of water to or from a pipeline.
a. Inlet
b. gate
c. weir
d. flume
b. gate
A closed conduit usually circular, square or rectangular in cross section, used for conveying water across and under an elevated roadway, embankment and dikes.
a. gate
b.culvert
c.canal
d.drop
b.culvert