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WALA > Part II Pre BE > Flashcards

Part II Pre BE Flashcards

(52 cards)

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1
Q

Typhoon and many other weather disturbances starts with/from a Low Pressure Area. What causes an LPA

A

Natural convection process; and
Evaporation from water bodies

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2
Q

The amount of sediment in a given flow, measured in mg/s

A

Sediment discharge

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3
Q

Which of the following is an application of Open Channel
a. Irrigation and drainage
b. Flood control
c. Sewerage

A

TANAN

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4
Q

An instruments/sensors is included in the radiosonde

A

Pressure-measuring instrument

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5
Q

In Agromet Station, standard frequency of monitoring evapotranspiration

A

Every 12 hrs

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6
Q

Trade winds blow towards equator

A

Westward

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7
Q

After a typhoon makes a landfall

A

It’s speed decreases,
It’s gustiness decreases; and
It’s scope of effect decreases

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8
Q

Greenhouse gasses most contributed by anthropogenic causes

A

CH4

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9
Q

Given the depth of flow, the wetted perimeter of the most efficient rectangular channel

A

4d

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10
Q

Ratio of the water area to it’s top width

A

Hydraulic depth

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11
Q

Well drilled less than 15m from the purpose of pumping groundwater for irrigation purposes

A

Shallow tube well

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12
Q

Non-corrosive and non-scaling materials suitable for pipes in drip irrigation system, except

A

Polyurethane

(Polyethylene, Polyvinyl chloride and Polybutene)

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13
Q

Cropping Pattern —
Cropping Intensity —
Cropping Efficiency —
Cropping Schedule —

A

—Sequence
—Frequency
—Harvest
—Date or Time

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14
Q

SOIL TEXTURE
Clay —
Silty Clay —
Clay Loam —
Silty Clay Loam —
Sandy Clay Loam —
Sandy Loam —

A

Seepage & Percolation (mm/day)
—1.25
—1.5
—1.75
—1.75
—2
—4

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15
Q

Tropical Cyclone develop

A

LPA
Tropical depression
Tropical storm
Typhoon

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16
Q

Under microirrigation system, water is applied:

A

at low flow rates

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17
Q

Not true about pipe flow

A

Flow is subjected to atmospheric pressure

True about pipe:
•it exerts no direct pressure
•it has no free surface
•flow is confined in a close conduit and
•it exerts hydraulic pressure

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18
Q

For soil with higher organic matter content, oil erosion is _____

A

lower

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19
Q

Canal side slope angle of 36.87° is equivalent to side slope ratio of ___

A

3:4

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20
Q

Components of the Total Dynamic Head of a sprinkler, except

A

Water level in tank

Following:
•friction loss in hose
•suction head
•riser height

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21
Q

Not a dam appurtenance
a. Inspection pathways
b. Safety railings & fences
c. footbridge

22
Q

The sub soil layer in which certain leached substances are deposited

23
Q

Scientific name of the ff:
•Black pepper —
•Pineapple —
•Castor bean —
•Santol —
•Rambutan —

Study These Flashcards
A

— Piper nigrum
— Ananas comosus
— Ricinus commons
— Sandorium koetjape
— Nephelium peppaceum

24
Q

Infiltration equation that relates infiltration capacity and cumulative infiltration is:

25
Light is ____ in all directions when it passes microscopic particles such as aerosol particles or even air molecules
Scattered
26
19% of sun's radiation is:
Absorbed by atmosphere and clouds
27
In July 2024, the latest typhoon that hit the Philippines is named as "Typhoon Carina". What ks it's international name?
Gaemi
28
The ff are the factors that causes variation in temperature from place to place, EXCEPT a. Differences in the receipt of solar radiation depending on the longitude b. Differential heating of land and water c. Ocean currents d. Altitude
a
29
Thin sheet of white ice crystal clouds that may give a sky a milky look. Sometimes produce halos around the sun or moon
Cirrostratus
30
Based on PAES 226, what ks the minimum size lf catchment area per 1000m² reservoir capacity for terraced land use?
0.2–0.5 ha
31
The correct characteristics of an Open Channel Flow?
Open channel flow depends on energy gradient
32
A concrete structure usually built along the bank of a river or stream and which draws water to be channeled into an irrigation system
Intake structure
33
A type of open channel flow where the depth of flow is the same at every section of the channel
Uniform flow
34
If the calculated Froude's Number is 1.05, the flow is
Rapid
35
You are asked with designing an irrigation system for a low rainfall region. What hydrologic data would be most critical to gather in order to plan effectively for water conservation?
Infiltration, evaporation and transpiration data
36
In the Lewis-Kostiakov equation for infiltration rate, what foes the parameter ‘a’ represent
A constant related to the empirical characteristics of the soil
37
Primary purpose of a drainage system in agricultural fields
To improve excess water from the root zone
38
Type of drainage system layout suitable for concave areas called
Herringbone
39
The ratio of the dry weight of soil particles to the weight of an equal volume of water
Real specific gravity
40
Using the sprinkler, the water both from the sprinkler inlet and through the flow controller reaches the silicon tube, setting the tube in motion and water is spread on the field
Stationary sprinkler
41
What classification does belong if the coefficient of variation of the point-source emitter type reached 0.08?
Marginal
42
This type of emitter has relatively long flow paths with larger path cross-section with turbulent flow regime
Tortuous
43
In designing drop, the first step is to:
Determine the critical depth
44
Glycine max is commonly known as
Soybean
45
While conducting a hydrological study of a river basin, you observe that the river's flow has significantly reduced over the years. To determine the cause, which of the following factors should you investigate first?
Changes in land use within the basin Variation in precipitation patterns
46
The formula for Cook's Method in computing the peak runoff rate is q=PRF. What does R stands for
Peak runoff rate in 10-year occurrence
47
Method in estimating evapotranspiration utilizes temperature and daytime hours
Blanney-Criddle Kay PENMAN (radiation)
48
Determination of Effective Rainfall using ADB Method
✓ Rainfall values below the determined decadal CWR shall be the effective rainfall snd the values above becomes surface waste, ✓ The CWR in decadal basis shall be known and represented in the graph ✓ The average values of rainfall for each decades shall be computed
49
Which of the ff is not a method for calculating a reference crop evapotranspiration? a. Penman-Monteith b. Radiation c. Pan evaporation d. Theissen
Radiation
50
A type of terrace that is used for maximum soil and water conservation
Bench
51
In Rational Method for estimating peak runoff rate, the time concentration for a watershed influenced by
Maximum length of flow and watershed gradient
52
In Universal Soil Loss Equation (USLE) a factor represent the influence of slope length and steepness on soil erosion
LS factor

WALA (4 decks)

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