WEEK 2 PART 2 Flashcards by Rai Olino

The center of the hyperbola 16y2 – 9x2 – 64y – 80 = 0.
A. (2, 0)
C. (0, -2)
B. (0, 2)
D. (-2, 0)

B. (0, 2)

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The center of the ellipse 9x2 + 16y2 – 36x – 32y – 92 = 0 is at:
A. (2, 1)
C. (-1, -2)
B. (-2, -1)

A. (2, 1)

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The vertex of the parabola x2 - 4x - 8y - 28 = 0 is at:
A. (2, 4)
B. (2, -4)
C. (4, 2)
D. (-4, 2)

B. (2, -4)

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The slope of the line whose equation is given by x + 3y – 6 = 0 is:
A. 3
C. 1/3
B. 1
D. -1/3

D. -1/3

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Find the area of the region bounded by the curve y = 3x – x2, the x-axis and the vertical lines x = 0 and x = 3:
A. 27/6 sq units
C. 5/6 sq units
D. 9/2 sq units

D. 9/2 sq units

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The cost of annual production of an agricultural feed is given by C(x) = 5000 + 80000000/x + x/20, where x is
the average batch size per production run. The value of x which makes the production cost a minimum is:
A. 30,000
B. 40,000
C. 45,000
C. 45,000
D. 30,000

B. 40,000

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Find the area of the region bounded by the graphs of y = x2 – 2 and y = x.
A. 31/6 sq units
B. 9/2 sq units
C. 5/6 sq units
D. 5 sq un

B. 9/2 sq units

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The value of the definite integral ∫ 𝑥(3 − 𝑥)𝑑𝑥
3
1

A. 10/3
B. 17/3
C. 27/6
D. 5/6

A. 10/3

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A product manufactured by a company is sold in bulk at a price of 200 pesos per unit. If the total production cost
in pesos for x units is C(x) = 500000 + 80x + 0.003x2 and if the production capacity of the firm is at most 30,000
units in a specified time, how many units of the product must be manufactured and sold in that time to maximize
the profit?
A. 30,000
B. 25,000
C. 20,000
D. 15,000

C. 20,000

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A conservationist is stocking a lake with fish. The more fish he puts in, the more competition there will be for
available food supply, and the fish will gain weight more slowly. It is known from a previous study that if there
are n fish per unit volume of water, the average weight that each fish gains in a season is given by w = 600 – 30n.
What value of n will give the maximum total weight of fish in the lake?
A. 10
C. 20
B. 15
D. 25

A. 10

Dmax = a/2b
= 600/2(30)
= 10

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At what rate was the number of live spores decreasing 5 minutes after the treatment was completed?
A. 47 spores/min
C. 49 spores/min
B. 48 spores/ min
D. 50spores/min

A. 47 spores/min

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An open box is to be made from a 16-inch by 30-inch piece of cardboard cutting out squares of equal size from
the four corners and bending up the sides. What should be the length of the side of the squares to be cut to obtain
a box with largest possible volume?
A. 10/3 inches
B. 5 inches
C. 6 inches
D. 3 inche

D. 3 inche

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A farmer has 4km of fencing wire and wishes to enclose a rectangular piece of land through which flows a straight
river which is to be utilized as one side of the enclosure. What is the length of the rectangular area that would to
enclose as much land as possible?
A. 1 km
B. 1.5km
C. 2 km
D. 2.5km

C. 2 km

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The radius of a balloon is increasing at the rate of 2 cm/sec. How fast is the volume of the balloon increasing
when its radius is 2cm?
A. 800π cm2/s
C. 800π cm3/s
B. 400π cm2/s
D. 800π cm/s

C. 800π cm3/s

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. A cylindrical water tank of radius 10 feet is being drained at the rate of 200 ft3/min. How fast is the height of the
water in the tank changing?
A. 2/π ft/min
C. -2π ft/min
B. -2/π ft/min
D. 2π ft/min

B. -2/π ft/min

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A boat is being pulled into a dock by a rope that passes through a ring on the bow of the boat. The dock is 8 feet
higher than the bow ring. If the boat is being pulled in at the rate of 3 ft/sec, how fast is the boat approaching the
dock when the length of the rope from the boat to the bow ring is 10 feet?
A. 2 ft/sec
C. 4 ft/sec
B. – 3 ft/sec
D. 5 ft/sec

D. 5 ft/sec

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When a circular plate made of metal is heated in an oven, its radius increases at the rate of 0.01 cm/min. At what
rate is the plate’s area increasing when the radius is 50 cm?
A. π cm/min
B. π cm2/min
C. 2π cm/min
D. 2π cm2/min

B. π cm2/min

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. A foodstuff is susceptible to contamination from bacterial spores. In order to kill the spores, the food was
subjected to a temperature of 120 degrees Centigrade. The number N of spores still alive t minutes after the high
temperature treatment has been completed is given by N = 1200e-0.5t
18. How many live spores were there when t = 0?
A. 0
C. 1000
D. 12

D. 1200

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What percentage of the original spores were still alive when t = 5?
A. 8%
B. 9%
C. 10%
D. 11%

A. 8%.

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Find the time required to kill 50% of the spores.
A. 1.386 min
B. 1.387 mi
C. 1.388 min
C. 1.388 min
D. 1.389 min

A. 1.386 min

0.50x1200 = 1200e^-0.5(t)
t = 1.386 min

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At what rate was the number of live spores decreasing 5 minutes after the treatment was completed?
A. 47 spores/min
C. 49 spores/min
B. 48 spores/ min
D. 50spores/min

C. 49 spores/min

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A rope is tied to the top of a flagpole. When it hangs straight down, it is 2 meters longer than the pole. When the
rope is pulled tight with the lower end at the ground, it makes an angle of 60 degrees to the horizontal. How tall
is the flagpole?
A. 12.6 m
B. 12.7 m
C. 12.8 m
D. 12.9 m

D. 12.9 m

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The velocity of a moving object is given by the function v(x) = 3x, where x is in hours and v is in miles per hour.
What is the distance the object has traveled during the first 3 hours (0 ≤ x ≤ 3)?
A. 42 miles
B. 15.3 miles
C. 24 miles
D. 13.5 miles

D. 13.5 miles
3
∫0 3x
= 13.5 miles

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A landmark A is observed from two points B and C, which are 400 meters apart. The magnitude of angle ABC is
measured as 68 degrees and the magnitude of angle ACB as 70 degrees. Find the distance from A to C.
A. 554 m
B. 555 m
C. 556 m
D. 557 m

A. 554 m

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Pregnant cara-cow. A. Heifer B. Stag C. In calf D. Calving

C. In calf

A swimming pool can be emptied in 6 hours using a 10-horsepower pump along with a 6-horsepower pump. The 6-horsepower pump requires 5 hours more than the 10-horsepower pump to empty the pool when working by itself. How long will it take to empty the pool using just the 10-horsepower pump? A. 3 hours B. 8 hours C. 10 hours D. 15 hours

C. 10 hours

. The interval from the beginning of one heat period to the beginning of the next. A. Proestrus B. Estrous cycle C. Puberty D. Metestrus

B. Estrous cycle

Most grown banana variety in the Philippines. A. Saba B. Lakatan C. Cavendish D. Latundan

C. Cavendish

Which is not considered as a high value crop in the Philippines. A. Pineapple C. Calamansi B. Banana D. Potatoes

D. Potatoes

Goat meat. A. Lapan B. Venison C. Mutton D. Chevon

D. Chevon

Plants living more than one year but, in some cases, producing seed in the first year and every season thereafter. A. Annual B. Quarter annual C. Biennial D. Perennial

. Annual

A mature male fowl. A. Capon B. Rooster C. Cock D. Poulard

C. Cock

The series of processes by which an organism takes in and assimilates food for promoting growth and replacing worn out or injured tissues. A. Nutrition C. Development D. Parturition

. A. Nutrition

Roughage of high feeding value. A. Forage B. Fodder C. Grass D. Pasture

. Forage

Garden crops, grown under systems of intensive culture in relatively small areas. A. Agronomic crops C. Horticultural crops B. Cultural crops D. Vegetab

C. Horticultural crops

Young swine of either sex weighing approximately 50 kg. A. Gilt C. Barrow B. Shote D. Boar

A. Gilt

Which nutrient is deficient to plant when it manifests sickly yellowish green color, dwarfish growth, and drying up of leaves starting from the bottom of the plant progressing upward. A. Nitrogen B. Phosphorus C. Potassium D. Oxygen

A. Nitrogen

Aerobic process involving the production of nitrates from ammonium salt. A. Nitrification C. Ammonification B. Denitrification D. Nitrogen synthesis

A. Nitrification

Which of the following is not a principal factor involved in soil formation. A. Parent material C. Topography B. Climate D. Time

C. Topography

Done by planting short season, drought tolerant crops after rice, more especially upon failure of the rice crop due to pest. A. Sequential planting B. Band application C. Crop rotation D. Hardening

A. Sequential planting

Which of the following is not a major element required for plant nutrition. A. Oxygen C. Hydrogen B. Carbon D. All of these

D. All of these

Fertilizer having a grade of 14-14-14. A. Urea B. Complete fertilizer C. Muriate of potash D. Organic fertilize

B. Complete fertilizer

The lack or loss of appetite for food. A. Antiserum B. Anorexia C. Brooding D. Agalacti

B. Anorexia

A 200 m x 100 m pond has its length oriented along the wind direction. Estimate the wave height that may form if usual wind speeds on-site is 25 kph. A. 5 cm C. 15 cm B. 10 cm D. 20 cm

C. 15 cm Wave Height = 0.014D^0.5 = 0.014(100m)^0.5 = 0.14m or 14 cm (close to 15cm)

An aerator with an SAE of 3.2 can transfer how much oxygen under standard conditions? A. 3.20 lb O2/kW-hr B. 3.20 kg O2/hp-hr C. 1.95 lb O2/hp-hr D. 1.95 kgO2/kW-

C. 1.95 lb O2/hp-hr

A pond levee 1.50-m high with a top width of 2.00 m and 3:1 side slope requires how much soil per meter length, assuming the additional soil requirement for the core trench is 15% and settling allowance is 20%? A. 9.8 m3/m B. 11.0 m3/m C. 11.7 m3/m D. 13.5 m3/m

D. 13.5 m3/m A= (2m)(1.5) + 3(1.5)^2 = 9.75 m2 9.75m2 x 1.15 x 1.20 = 13.45 m3/m

Without additional aeration, a continuous supply of 70 gpm of oxygenated, good quality flow-through water can support approximately. A. 265 kg fish B. 300 kg C. 365 kg fish D. 400 kg fish

A. 265 kg fish

This type of aerator may be excellent in emergencies because it quickly raises the oxygen level in a small area, but is not good in dispersing oxygen throughout the pond. A. Diffused bubble aerator C. Vertical pump aerator B. Paddle-wheel aerator D. Aspirating aerator

C. Vertical pump aerator

A method of erosion control accomplished by constructing broad channels or benches across the slope is: A. Contouring C. Strip cropping B. Terracing D. Grassed waterway

B. Terracing

The Universal Soil Loss equation is applicable for estimating: A. Sheet erosion C. Sheet and rill erosion B. Rill erosion

C. Sheet and rill erosion

The combination of splash and sheet erosion is: A. Rill erosion B. Inter-rill erosion D. Gully erosion C. Gully erosion D. Channelized erosio

B. Inter-rill erosion

Type of embankment recommendable to use if there is abundant supply of materials of low permeability materials A. Zoned type C. Diaphragm type B. Homogenous type D. Keyed ty

B. Homogenous type

The time of concentration is a function of: A. The maximum length of flow B. The watershed gradient C. The difference in elevation between the watershed outlet and the most remote point D. All of these

. All of these

Given the following hydrologic data in a 187-ha watershed feeding a reservoir: Decade Average Rainfall (mm) Baseflow (mm) 1 2.1 8.3 2 5.6 8.3 3 15.3 8.3 4 8.62 7.49 5 8.39 7.49 6 5.0 7.49 The reservoir inflow after 40 days assuming a runoff coefficient of 0.17 is: A. 20,394 m3 C. 15,592 m3 B. 16,746 m3 D. 12,643 m

B. 16,746 m3

The velocities at 0.2 and 0.8 of the depth of flow in a parabolic open channel are 1.0 m/s and 0. 2 m/s, respectively. If the flow depth is 0.6 m and the top width is 2.0 m, the discharge is: A. 380 lps C. 580 lps B. 480 lps D. 680 lps

B. 480 lps Q=AV = 2/3 (2m)(0.6m)( 1.0+0.2/2) = 0.48 m3/s or 480 lps

Streamflow in river X has a mean of 128 m3/s and a standard deviation of 52 m3/s. If the sample data is normally distributed, the magnitude of streamflow corresponding to a return period of 6.25 years is: A. 128 m3/s B. 76 m3/s C. 180 m3/s D. 52 m3/s

C. 180 m3/s

The missing precipitation at station X is to be estimated from the following data: Station Observed Precipitation (mm) Average Annual Precipitation (mm) A 60 2300 B 78 2700 C 82 3000 If the average annual precipitation at station X is 2,500 mm, the unobserved precipitation at station X is: A. 73.3 mm C. 68.6 mm B. 79.3 mm D. 63.5 mm

C. 68.6 mm

The total head loss in a 1.0 m x 1.0 m inverted siphon with a length of 25 m and Manning’s roughness coefficient of 0.017 for a discharge of 2.5 m3/s assuming minor losses of 0.3 m is: A. 1.11 m C. 0.74 m B. 1.77 m D. 0.64 m

D. 0.64 m Q=AV S = Hf/L Headloss = 1.1(Hf + 0.3) = 0.64m

. Given the following data for an inclined drop structure: Discharge = 2.0 m3/s; Approach channel depth = 0.5 m; Channel width = 2.5 m. If the total drop height is 0.97 m, the initial depth prior to the hydraulic jump is: A. 0.12 m C. 0.14 m B. 0.13 m D. 0.15

D. 0.15

A vertical drop structure was designed with a 2.5-m wide rectangular approach channel. For a discharge of 2 m3/s, the total upstream head is: A. 0.4 m C. 0.6 m B. 0.5 m D. 0.7 m

C. 0.6 m

The friction loss in a 38-in diameter 20-m long pipe culvert with a Manning’s roughness coefficient of 0.017 for a discharge of 2.0 m3/s is: A. 0.32 m C. 0.43 m B. 0.29 m D. 0.13 m

B. 0.29

The friction loss in the suction pipe of a centrifugal pump is 0.3 m and the suction lift is 5.0 m. Assuming standard atmospheric pressure and a saturated vapor pressure of 3.8 kPa, the available net positive suction head is: A. 3.7 m C. 5.7 m B. 4.6 m D. 10.3 m

B. 4.6 m

Which of the following is true? A. Full load continuous duty horsepower should be greater than the pump brake horsepower B. The power rating for an electric motor is 15% greater than the brake horsepower C. The power rating for air-cooled gasoline engine is the highest among prime movers for shallow tubewell pumping D. All of these

D. All of these

A special intake structure that serves as an outlet of irrigation water into the main farm ditch or service area is called: A. Offtake C. Flow divisor B. Turnout D. Endcheck

B. Turnout

Given the following data in a drip irrigation system, the irrigation period is: Plant spacing 2 m Lateral spacing 4 m No. of emitters per plant 2 Net application depth 7.3 mm Irrigaton interval 2 days Emission uniformity 90% Average emitter discharge 2.5 lph A. 4.5 hrs B. 5.5 hrs C. 6.5 hrs D. 7.5 h

C. 6.5 hrs

If a 300 mm depth of soil, with a porosity of 48%, residual moisture content of 20% volume basis and apparent specific gravity of 1.1, is to be soaked for 5 days, the land soaking requirement should be: A. 8.64 mm/day C. 15.6 mm/day B. 15.0 mm/day D. 60.0 mm/day

B. 15.0 mm/day

. A 3-cm diameter and 4-cm long sharp-edged cylinder was used to collect an undisturbed soil sample. The wet mass of the soil sample was 41.0 g and the corresponding moisture content was 18% on a dry mass basis. Based on the soil porosity, the soil texture must be: A. Sandy B. Silt-loam C. Sandy-loam D. Clayey

D. Clayey

Which of the following is true? A. The actual depth of precipitation is equal to the depth of precipitable water B. The depth of precipitable water does not depend on atmospheric pressur C. The depth of precipitable water is a function of atmospheric pressure but is not a function of specific humidity D. The depth of precipitable water is greater than the actual depth of precipitation

D. The depth of precipitable water is greater than the actual depth of precipitation

Which of the following is true? A. Areas with vegetative cover have greater interception and higher runoff B. Bare soils lead to higher infiltration and lower runoff C. Bare soils have higher runoff and higher baseflow D. Vegetated areas lead to higher infiltration and lower runoff

D. Vegetated areas lead to higher infiltration and lower runoff

The hydrologic process that reduces the rainfall erosivity is: A. Precipitation C. Overland flow B. Evapotranspiration D. Interception

D. Interception

Method of erosion control involving strips of closely growing plants, usually grass or legumes, laid between contour strips of crops in regular rotations is called: A. Contour strip cropping C. Field strip cropping B. Buffer strip cropping D. Conservation agricult

C. Field strip cropping

72. The friction factor in Darcy-Weisbach equation for pipe flow can be expressed in terms of Manning’s roughness coefficient as: A. 185 n2/d1/3 B. 165 n2/d1/3 C. 145 n2/d1/3 D. 125 n2/d1/

D. 125 n2/d1/

The friction head losses through a 30-inch 15-m long RCP with a Manning’s roughness coefficient of 0.018 when the discharge is 3.0 m3/s is: A. 0.9 m B. 1.3 m C. 1.9 m D. 2.4 m

C. 1.9 m

Given the following data: Water discharge (m3/s) Sediment discharge (lps) 21.7 0.56 27.2 0.74 32.7 0.72 78.4 1.08 78.8 0.96 128.1 1.26 129.5 1.4 159.6 1.42 166.7 1.58 9.7 0.38 The exponent of water discharge in the equation for sediment rating is: A. 0.14 C. 0.47 B. 0.68 D. 0.36

C. 0.47

An outlet for a reservoir embankment is to be designed for a critical demand flow of 5.0 m3/s and a critical head of 8.0 m. Assuming a total head loss of 1.5 m, a recommendable RCP diameter is: A. 25 in C. 30 in B. 28 in D. 32 in

C. 30 in

As shown in the figure below, a 3-m wide and 13.4-m high spillway with a short approach channel was designed for a maximum discharge of 6.0 m3/s. Assuming a head loss down the spillway of 0.25 m, the initial depth d1 prior to the hydraulic jump is: A. 0.10 m C. 0.15 m B. 0.12 m D. 0.20 m

B. 0.12 m

The sequent depth d2 is: A. 0.6 m C. 2.6 m B. 1.6 m D. 3.6 m

C. 2.6 m

A trapezoidal channel to be lined with grass mixture and laid on erosion-resistant soil at a slope of 3% is being designed to carry a discharge of 30 ft3/s. The channel design for stability gave an initial depth of 0.83 ft and a bottom width of 4.76 ft for a side z = 3. If the retardance coefficient for maximum capacity is 0.0465, the final design depth should be: A. 0.85 ft C. 1.0 ft B. 0.95 ft D. 1.05 ft

B. 0.95 ft

Which of the following statements is correct? A. The lower the salinity, the poorer is the water quality B. The higher the sodium ions and the lower the calcium and magnesium ions, the better is the water quality C. The lower the bicarbonate concentration, the poorer is the water quality D. The higher the sodium ions and the higher the calcium and magnesium ions, the better is the water quality

D. The higher the sodium ions and the higher the calcium and magnesium ions, the better is the water quality

The conveyance loss in a 400 m-long unlined parabolic canal with a top width of 1.5 m when the flow depth is 0.8 m assuming a S&P loss rate of 3.33x10-6 m3/s per m2 is: A. 1.5 lps B. 3.5 lps C. 6.1 lps D. 7.3 lps

B. 3.5 lps

A 500-ha watershed has an average runoff coefficient of 0.6. The most remote point is at an elevation of 88 m AMSL while the the watershed outlet is at an elevation of 58 m AMSL and are 4.8 km apart. The rainfall intensity with a duration of 1 hr, 1.6 hrs and 2.3 hrs are 25 mm/hr, 30 mm/hr and 38 mm/hr, respectively. The following equations apply to this watershed. The peak runoff under these conditions is: A. 20.6 m3/s B. 24.7 m3/s C. 27.4 m3/s D. 29.3 m3/s

B. 24.7 m3/s

2. A floodway has been designed for a discharge with a return period of 50 years. The risk that the structure will experience the design flood one or more times in 20 years is: A. 15.3% C. 33.2% B. 23.5 % D. 92.3%

C. 33.2%

An agricultural land is to be drained using tile drain system. The depth to impervious layer is 4.0 m and the depth to water table to be maintained is 0.6 m. The saturated hydraulic conductivity is 62.5 mm/hr and the drainage coefficient is 7 mm/day. If the drains will be installed 1.0 m below the ground surface, the drain spacing should be: A. 40 m C. 47 m B. 43 m D. 52 m

C. 47 m

Given the following data: Contour Elevation (m) Area within contour (m2) 82 40 83 80 84 1600 85 7320 86 16420 87 17720 88 18920 The accumulated volume of storage when the water level in the reservoir is 86 m is: A. 900 m3 C. 17,230 m3 D. 34,300 m3

C. 17,230 m3

An unlined lateral canal is to be designed to irrigate 500 hectares. The bottom slope is to be 0.15% and the side slope z is 1.5. The roughness coefficient is 0.025. The maximum permissible velocity is 0.8 m/s. If the farm water requirement is 17.28 mm/day, the design bottom width should be: A. 0.6 m C. 1.0 m D. 1.25 m

D. 1.25 m

The most hydraulically efficient concrete-lined trapezoidal channel section with a bottom slope of 0.1% to carry a discharge of 2.0 m3/s has a bottom width of: A. 1.0 m C. 1.28 m B. 1.1 m D. 0.95 m

B. 1.1 m

The main canal of a gravity irrigation system is to be designed to carry a maximum discharge of 8 m3/s. The cross-sectional shape is to be trapezoidal with a side slope of 1:1. The bed is to be lined with concrete. The bottom slope is to be 0.0005. If the permissible b/d ratio is 3, the design depth should be: A. 0.6 m B. 0.8 m C. 1.0 m D. 1.2 m

D. 1.2 m

. It is a measure of the amount of water that the soil will retain against a tension of 15 atmospheres. A. Permanent wilting point C. Available moisture B. Field capacity D. Readily available moistur

A. Permanent wilting poin

Lands serviced by natural irrigation or irrigation facilities. These include land where water is not readily available as existing irrigation facilities need rehabilitation or upgrading or where irrigation water is not available year round. A. Irrigators’ Association B. Irrigation System C. Irrigated Lands D. Irrigable Lands

D. Irrigable Lands

refers to the amount of water used for the non consumptive demands such as land soaking and land preparation, and for the consumptive demands such as evapotranspiration requirements of the crop during its entire growth period. A. Diversion Water Requirement B. Farm Water Requirement C. Irrigation Water Requirement D. Crop Water Requirement

D. Crop Water Requirement

. A sprinkler irrigation system was designed for the following conditions Average operating pressure 40 psi Suction head 3.0 m Elevation difference between the pump and the junction of main and lateral 5.0 ft Length of lateral 400 ft Length of main 600 ft Diamete of lateral 2.5 in Diameter of main 3.0 in No. of sprinklers 10 (F=0.385) Riser height 3 ft System capacity 5 lps Pump efficiency 60% Scobey’s coefficient 0.4 If the area to be irrigated is level, the required input power is: A. 2.5 hp B. 3.5 hp C. 4.5 hp D. 5.5 hp

C. 4.5 hp

A drip irrigation system was designed for the following conditions: Plant spacing 2 m Lateral spacing 4 m Emitter spacing 1 m No. of emitters per plant 2 Wetted width 1.5 m Soil water holding capacity 130 mm/m Rootzone depth 0.5 m MAD 30% % area shaded 60% ETo 6.0 mm/day Kc 0.9 The irrigation interval should be: A. 1 day B. 2 days C. 3 days D. 4 days

B. 2 days

The Coronas climatic type characterized by the occurrence of all-year round rainfall due to southwest and northeast monsoons is: A. Type I B. Type II C. Type III D. Type IV

B. Type II

The mass of water vapor contained in a unit mass of moist air is called: A. Absolute humidity C. Specific humidity B. Mixing ratio D. Relative humidity

C. Specific humidity

The critical depth in a triangular open channel with a side slope z = 2 for a discharge of 2.0 m3/s is: A. 0.86 m C. 0.61 m B. 0.72 m D. 0.54 m

B. 0.72 m

Determined by placing an air-dry soil in a nearly saturated atmosphere at 25oC until it absorbs no more water. This tension is equal to a force of 31 atm. Water at this tension is not available to plants. A. Water tension B. Hydroscropic coefficient C. Wilting point D. Hygroscropic coefficient

. Hygroscropic coefficient

It is the ratio of water stored in the root zone during the irrigation to the water needed in the root zone prior to irrigation, expressed in percent. A. Consumptive use efficiency B. Water conveyance efficiency C. Water storage efficiency D. Water-use efficien

C. Water storage efficiency

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

WEEK 2 PART 2 Flashcards

(100 cards)