2012 Flashcards
It is the term used to describe the process of removing plants with unwanted characteristics, small and undesirable plants.
weeding
The most common irrigation method used for land farming.
surface
What type of flow is commonly employed to pipes?
laminar
Pitot tube is an instrument used to determine what characteristic of fluid?
velocity
It is said to be the major factor that causes soil erosion.
transpiration
What is the maximum suction head of a tubewell?
30 ft
A type of sprinkler irrigation known for its high initial cost but low labor cost.
self propelled center pivot
Darcy equation is used only to what type of flow?
laminar flow
It is the science that deals with the study of weather, water movement (blah..blah..blah)
meteorology
An instrument used to determine the wind speed.
anemometer
An instrument that measures the intensity of sunshine radiation received at the earth surface.
pyranometer
Almost 47% of the total drainage goes to what part of the world?
ATLANTIC OCEAN
Ground water is known as:
SUB-SURFACE WATER
What do you measure when using a coordinate method?
SLOPE
It refers to the composite part of the irrigation system that diverts water from natural bodies of water such as river, stream and lakes.
DIVERSION DAM
Convert 1 hp to KW.
0.746
A type of cropping system where in different crops are painted in an area one after the other each season.
Used if the entire area is to be drained and is usually more economic. Laterals enter the submain from one side only to minimize the double drainage that occurs near the submain.
Gridiron Layout
The submain is laid in a depression and the laterals join the submain from each side alternately. The land along the submain is double drained, but since it is in a depression, it probably requires more drainage.
Herringbone Pattern
This system is often used if the bottom of the depression is wide since it reduces the lengths of the laterals and eliminates the break in slope of the laterals at the edge of the depression.
Double-main System
How many ft of water are there in a atm?
33.93
It is the term used to piglets in one farrowing.
LITTER
A division in the biogas digester that prevents slurry from premature exit into sludge/outlet tank.
BAFFLE BOARD
It is the residue that comes out at the digester after the substrate is digested/processed inside the digester.
EFFLUENT
Field capacity can retain water against a tension of how many atmospheres?
1/3
Second important reason for cross breeding. The term is used to explain the fact that hybrids or crossbreed are usually better off and more vigorous than their parents.
HETEROSIS
A type of terracing with 6-8% slope.
broad base terrace
It consists of filling the casing with water so that air trapped in the pump does not hinder its operation and reduce efficiency.
priming
According to USDA, soil classification, 0.1 mm is categorized as:
FINE SAND
A type of irrigation system where water is delivered just below the root of plants
DRIP (????)
What is the recommended top width of earth embankment?
a. 2.4 m b. 3.5 m c. 7.5 m d. 12.5 m
Small farm reservoir has a standard height of:
5M
An earth embankment has a depth of 15 m, what should be the top width?
*use the formula W=0.4H+1 (Please verify)
There are 7 blue balls and 4 blue balls in the container. After the first ball was drawn, the drawn ball and returned to the container, another ball was drawn. What is the possibility that the 2 balls are both blue?
Universal Soil Loss Equation has the formula of USLE = CPSLKRM. Determine the total soil loss blah balh (given lahat: direct substitution)
An earth embankment type constructed of relatively homogenous soil material and wither keyed into the impervious foundation stratum or is constructed with an upstream blanket impervious materials. This type is limited to low fills and to sites having sufficient volume of satisfactory fill materials available.
SIMPLE
A pipe with a diameter of 3ft has a velocity of 7.5 fps. Suddenly, the pipe diameter increased to 4 ft. What will be the new velocity?
A type of survey that deals with the contours of the surveyed location.
TOPOGRAPHIC SURVEY
A type of survey that delineates building.
Mortgage survey or physical survey
An instrument used to determine the distance, angel…
ENGINEERS TRANSIT
In measuring distance between two points with an obstruction, what should be the method/s tpo be used?
SIMILAR TRIANGLE (???) OR PARALLEL
Determine the power develop of a pumo given Q __gpm and H __ ft.
*Use formula P=QH/33,000
Given FC, PWP, AM, finf Mc
*Use formula Mc=(FC-PWP)AM+PWP, basta sagot dit0 20%
Probability occurrence (I forgot the problem but still have the solution and answer)
= 1-(1-a/40)^20
= 0.397 or 397%
The ratio of water beneficially used on the project, farm of field to the amount of water delivered to the farm expressed in percent.
CONVEYANCE EFF
