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BOARD EXAM RECALLED QUESTIONS > PART 3-RECALLED (2013) > Flashcards

PART 3-RECALLED (2013) Flashcards

1
Q

It refers to the composite parts of the irrigation system that divert water from natural bodies of water such as rivers, streams and lakes

A

HEADWORKS

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2
Q

The International Soil Science Society describes sand as a soil particle with a diameter of

A

0.02MM-2MM

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3
Q

The locus of the elevation to which water will rise in a piezometric tube

A

HYDRAULIC GRADIENT

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4
Q

Surface irrigation method where a much smaller area is enclosed by levees

A

Basin Irrigation

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5
Q

The ratio of water beneficially used on the project, farm or field to the amount of water delivered to the farm expressed in percent.

A

Water Use Efficiency

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6
Q

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

Water Storage Efficiency

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7
Q

The ratio between water stored in the soil root zone during irrigation and the water delivered to the farm expressed in percent

A

Water Application Efficiency

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8
Q

The ratio between the water delivered to the farm and the water diverted from a river or reservoir expressed in percent

A

Water Conveyance Efficiency

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9
Q

The sum of total static head, pressure head, velocity head and friction head

A

Total Dynamic Head

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10
Q

The water is directed to the base of the plant. Water is applied to the soil through small orifices

A

Drip/ Trickle Irrigation

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11
Q

The surface is rarely wet since the water is supplied from the soil underneath. This requires complete control of the water table so that the root zone is kept relatively free of excess water but is continually supplied with capillary moisture during the cropping season

A

Sub-irrigation

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12
Q

It is accomplished by running water through small channels or furrows while it moves down or across the slope of the field

A

Furrow irrigation

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13
Q

In Earth embankment, on structures less than 15 m high with average materials, the sideslope should be steeper than_____on the upstream face

A

3:1

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14
Q

In Earth embankment, on structures less than 15 m high with average materials, the sideslopes should be steeper than_____on the downstream face

A

2:1

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15
Q

Caused by the rising of warmer, lighter air in colder, denser surroundings

A

Convective precipitation

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16
Q

The process of covering the land surface with plant residues, plastic or other materials appropriate to arrest loss of moisture through evaporation

A

Mulching

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17
Q

Two pronounced seasons, dry from November to April and wet during the rest of the year

A

Type I

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18
Q

No dry season with a very pronounced maximum rainfall from November to January

A

Type II

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19
Q

Seasons not very pronounced, relatively dry from November to april and wet during the rest of the year.

A

Type 3

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20
Q

Rainfall more less evenly distributed throughout the year

A

Type 4

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21
Q

operate with sprinklers set in a fixed position

A

Set system

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22
Q

sprinklers that must be moved manually through a series of positions during the course of irrigation

A

Periodic-Move System

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23
Q

composed of portable or buried pipe with
valve outlets at intervals for attaching the portable laterals.

A

Hand-Move system

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24
Q

the lateral pipes are rigidly coupled and each joint of pipe is supported by a large wheel where the lateral line forms the
axle for the wheels. This is mechanically moved by an engine mounted at
the center of the line

A

Side-roll lateral system

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25
Q

consists of rigidly coupled lateral pipe
connected to a buried mainline positioned in the center of the field.
Laterals are towed lengthwise over the mainline from one side to the
other in an “s” form

A

End-tow lateral system

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26
Q

sprinkler systems not requiring to be moved during the
course of irrigation

A

Fixed system

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27
Q

sprinklers operate while moving in either a
circular or straight path.

A

Continuous Move System

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28
Q

The type of surveying that takes into account the true shape of the earth. These surveys are of high precision and extend over large areas

A

Geodetic Surveying

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29
Q

The survey of bodies of water made for the purpose of navigation, water supply, or sub-aqueous construction

A

Hydrographic

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30
Q

The type of surveying in which the mean surface of the earth is considered as a plane, or in which its spheroidal shape is neglected, with regard to horizontal distances and directions

A

Plane surveying

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31
Q

Consist of counting the number of steps in a required distance

A

Pacing

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32
Q

nstrument for measuring the velocity (speed) of a flowing fluid.

A

Pitot tube

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33
Q

Measure Specific Gravity

A

Hydrometer

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34
Q

What do you call the phenomena where plants flowers and speeds up in seed development under low temperature or when chilled

A

Vernalization

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35
Q

What do you call the phenomena where plants flowers and speeds up in seed development under low temperature or when chilled

A

Fixed cost

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36
Q

cost which vary with the volume of production (the costs of material and labor used in a
product

A

Variable cost

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37
Q

– refers to the additional costs or revenue that will result from increasing the output of a
system by one or more units. It is also referred to as marginal cost.

A

Incremental cost

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38
Q

often used to mean all expenditures that are not direct costs

A

Overhead cost

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39
Q

The minimum trajectory angle for sprinkler

A

10-25 degrees

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40
Q

Allowable percentage depletion of most crops

A

50%

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41
Q

Soil moisture tension with 15 atm

A

PWP

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42
Q

Basic irrigation method for lowland farming

A

Basin Irrigation

43
Q

Laterals enter the submain from one side only to minimize the double drainage that occurs near the submain

A

Gridiron

44
Q

Depth of shallow tubewell

A

20-60 ft

45
Q

Equation for evapotranspiration computation

A

Penman montieth equation

46
Q

Precipitation results from mechanical lifting of air mass over mountain barriers

A

Orographic rainfall

47
Q

Travels over the ground and through the channels to reach the outlets

A

: Runof

48
Q

A hydrograph wit a unit volume of direct runoff for a given storm duration

A

Unit hydrograph

49
Q

Combination of splash and sheet erosion

A

Inter-rill

50
Q

Flow greater than the critical flow

A

Supercritical flow

51
Q

Type of flow wherein the discharge or flow in a prismatic channel is constant with respect to time

A

Steady flow

52
Q

Irrigation components, related to flow and head

A

Headgate

53
Q

Standard height of an earth embankment

A

not exceeding 15 m

54
Q

A mathematical expression for the macroscopic flow of water through a porous system

A

Darcy’s law

55
Q

A thin film of soil layer detached and transported by water flowing on the land surface

A

Sheet Erosion

56
Q

Soil property which describes the ability of the soil to transmit water

A

Hydraulic conductivity

57
Q

Spheroidal shape is neglected, with
regard to horizontal distances and
directions.

A

Plane Surveying

58
Q

The type of surveying that takes
into account the true shape of
the earth.

A

Geodetic surveying

59
Q

Made to establish
the horizontal and vertical positions
of arbitrary points.

A

Control Survey

60
Q

Made to
determine the length and direction
of land lines and to establish the
position of these lines on the ground

A

Boundary Survey

61
Q

Made to
gather data to produce a
topographic map showing the
configuration of the terrain and the
location of natural and man-made
objects.

A

Topographic Survey

62
Q

The survey of
bodies of water made for the
purpose of navigation, water
supply, or subaqueous
construction

A

Hydrographic Survey

63
Q

Made to control,
locate and map underground and
surface works related to mining
operations.

A

Mining Survey

64
Q

Made to lay
out, locate and monitor public
and private engineering works

A

Construction Survey

65
Q

: Refers to those
control, topographic, and
construction surveys necessary for
the location and construction of
highways, railroads, canals,
transmission lines, and pipelines

A

Route Survey

66
Q

Made to
utilize the principles of aerial
photogrammetry, in which
measurements made on
photographs are used to determine
the positions of photographed
objects.

A

Photogrammetric Survey

67
Q

one of the
oldest and simplest methods of
making measurements.
Distances can be measured
using the chain’s length

A

Chain

68
Q

this survey uses
the principle of traversing.
This method does not
requires the need to create
triangles

A

Compass

69
Q

They are plotted
directly on paper with
their relative position.
The rays are drawn from
station to object on
ground. The table is
placed at each of the
successive station
parallel to the position
of the last station.

A

Plain table

70
Q

is a
precise angle measuring
tool. The device is zeroed
using a reference point
then horizontal and vertical
angles can be easily
calculated by pointing the
targeting lens at the
desired object. It is used
with a chain to measure
distances.

A

Theodolite

71
Q

This is a
special form of theodolite
that has a stadia diaphragm
and an anallatic lens
-This eliminates the need for
a chain because the
distance can be calculated
using the diaphragm. This
method has been almost
completely replaced by
using a total station.

A

Tacheometer

72
Q

This is a
theodolite with an
electronic distance
measuring system. With the
EDM, the distances can be
measured without a chain.
This can allow a single
surveyor to capture much
more information in a faster
timeframe.

A

Total Station

73
Q

represented by contour
lines, which are the marked
interconnected points of
equal elevation above mean
sea leve

A

Relief

74
Q

represented by water
bodies which include lakes,
rivers, streams, creeks, and
swamps;

A

Hydrographyy

75
Q

represented by the artificial
features which include roads,
airports, urban development,
and buildings.

A

Culture

76
Q

describes the
vertical datum where elevation/height
values are referenced and not from the
base of mountains or hills

A

Mean Sea Level (MSL)

77
Q

A type terrace Used for 9-24% slope

A

Conservation bench terrace

78
Q

Terrace Used for 25-30% slope

A

Bench Terrace

79
Q

If it is desired to have a maximum flow of water at any depth, the best canal crosssection to be used is the:

A

Trapezoidal

80
Q

Laminar flow has a Reynold’s Number of:

A

Less than 1

81
Q

Which of the following has the highest approximate residence time.

A

Groundwater (deep)

82
Q

Critical Flow is

A

Fr = 1

83
Q

It the vertical distance from the centerline of the pump to the discharge water level

A

Static discharge head

83
Q

When the water level in the pipe drops below the upper edge of the pipe or culvert
and its conduit controls, the flow becomes:

A

Open channel flow

84
Q

A system of aquaculture in which the waste produced by farmed fish or other
aquatic animals supplies nutrients for plants grown hydroponically, which in turn
purify the water

A

Aquaponics

85
Q

It is also called the vadose zone

A

Saturated zone

86
Q

An artesian well is an example of:

A

Confined Aquifer

87
Q

What color in PAG-ASA’s color coded rainfall advisory system which indicates that a
possibility of storm surge of 0.5 m up to 1 m high might likely to occur

A

Yellow

88
Q

What color in PAG-ASA’s color coded rainfall advisory system which indicates that a
torrential rainfall more than 30 mm within one hour might likely to occur?

A

Red

89
Q

The infiltration equation based on the exhaustion process is the.

A

Horton

90
Q

A type of sprinkler irrigation known for its high initial cost but low labor cost

A

overhead sprinkler

91
Q

In surveying, what do you measure when using a coordinate method?

A

elevation

92
Q

A 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 is probably requires more drainage

A

Herringbone

93
Q

A type of cropping system where in different crops are palnted in an area one after
the other each season

A

relay cropping.

94
Q

A division in the biogas digester that prevents slurry from premature exit into
sludge/outlet tank.

A

Bafleboard

95
Q

Surveying error about sa difference

A

Discrepancy error

96
Q

Surveying error about sa instrument

A

Systematic error

97
Q

Surveying error about sa computation

A

Analytic error

98
Q

Surveying error about sa personal matters

A

Human error

99
Q

Plant stem blast is commonly caused by

A

Fungi

100
Q

Which of the following has the highest bearing capacity?

A

Rock

101
Q

Type of terrace that is used for 9-24% slope.

A

Zing

102
Q

Type of flow which is the same at every section of the prismatic channel.

A

Uniform flow

103
Q

It is a geologic formation which transmits water at a rate insufficient to be
economically developed for pumping.

A

Aquiclude

BOARD EXAM RECALLED QUESTIONS (2 decks)

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