PART 3-RECALLED (2013)

Question 1

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

Answer 1

HEADWORKS

Question 2

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

Answer 2

0.02MM-2MM

Question 3

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

Answer 3

HYDRAULIC GRADIENT

Question 4

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

Answer 4

Basin Irrigation

Question 5

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

Answer 5

Water Use Efficiency

Question 6

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.

Answer 6

Water Storage Efficiency

Question 7

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

Answer 7

Water Application Efficiency

Question 8

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

Answer 8

Water Conveyance Efficiency

Question 9

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

Answer 9

Total Dynamic Head

Question 10

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

Answer 10

Drip/ Trickle Irrigation

Question 11

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

Answer 11

Sub-irrigation

Question 12

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

Answer 12

Furrow irrigation

Question 13

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

Answer 13

3:1

Question 14

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

Answer 14

2:1

Question 15

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

Answer 15

Convective precipitation

Question 16

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

Answer 16

Mulching

Question 17

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

Answer 17

Type I

Question 18

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

Answer 18

Type II

Question 19

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

Answer 19

Type 3

Question 20

Rainfall more less evenly distributed throughout the year

Answer 20

Type 4

Question 21

operate with sprinklers set in a fixed position

Answer 21

Set system

Question 22

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

Answer 22

Periodic-Move System

Question 23

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

Answer 23

Hand-Move system

Question 24

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

Answer 24

Side-roll lateral system

Question 25

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

Answer 25

End-tow lateral system

Question 26

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

Answer 26

Fixed system

Question 27

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

Answer 27

Continuous Move System

Question 28

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

Answer 28

Geodetic Surveying

Question 29

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

Answer 29

Hydrographic

Question 30

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

Answer 30

Plane surveying

Question 31

Consist of counting the number of steps in a required distance

Answer 31

Pacing

Question 32

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

Answer 32

Pitot tube

Question 33

Measure Specific Gravity

Answer 33

Hydrometer

Question 34

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

Answer 34

Vernalization

Question 35

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

Answer 35

Fixed cost

Question 36

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

Answer 36

Variable cost

Question 37

– 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.

Answer 37

Incremental cost

Question 38

often used to mean all expenditures that are not direct costs

Answer 38

Overhead cost

Question 39

The minimum trajectory angle for sprinkler

Answer 39

10-25 degrees

Question 40

Allowable percentage depletion of most crops

Answer 40

50%

Question 41

Soil moisture tension with 15 atm

Answer 41

PWP

Question 42

Basic irrigation method for lowland farming

Answer 42

Basin Irrigation

Question 43

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

Answer 43

Gridiron

Question 44

Depth of shallow tubewell

Answer 44

20-60 ft

Question 45

Equation for evapotranspiration computation

Answer 45

Penman montieth equation

Question 46

Precipitation results from mechanical lifting of air mass over mountain barriers

Answer 46

Orographic rainfall

Question 47

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

Answer 47

: Runof

Question 48

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

Answer 48

Unit hydrograph

Question 49

Combination of splash and sheet erosion

Answer 49

Inter-rill

Question 50

Flow greater than the critical flow

Answer 50

Supercritical flow

Question 51

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

Answer 51

Steady flow

Question 52

Irrigation components, related to flow and head

Answer 52

Headgate

Question 53

Standard height of an earth embankment

Answer 53

not exceeding 15 m

Question 54

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

Answer 54

Darcy's law

Question 55

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

Answer 55

Sheet Erosion

Question 56

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

Answer 56

Hydraulic conductivity

Question 57

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

Answer 57

Plane Surveying

Question 58

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

Answer 58

Geodetic surveying

Question 59

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

Answer 59

Control Survey

Question 60

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

Answer 60

Boundary Survey

Question 61

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

Answer 61

Topographic Survey

Question 62

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

Answer 62

Hydrographic Survey

Question 63

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

Answer 63

Mining Survey

Question 64

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

Answer 64

Construction Survey

Question 65

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

Answer 65

Route Survey

Question 66

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

Answer 66

Photogrammetric Survey

Question 67

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

Answer 67

Chain

Question 68

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

Answer 68

Compass

Question 69

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.

Answer 69

Plain table

Question 70

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.

Answer 70

Theodolite

Question 71

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.

Answer 71

Tacheometer

Question 72

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.

Answer 72

Total Station

Question 73

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

Answer 73

Relief

Question 74

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

Answer 74

Hydrographyy

Question 75

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

Answer 75

Culture

Question 76

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

Answer 76

Mean Sea Level (MSL)

Question 77

A type terrace Used for 9-24% slope

Answer 77

Conservation bench terrace

Question 78

Terrace Used for 25-30% slope

Answer 78

Bench Terrace

Question 79

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

Answer 79

Trapezoidal

Question 80

Laminar flow has a Reynold’s Number of:

Answer 80

Less than 1

Question 81

Which of the following has the highest approximate residence time.

Answer 81

Groundwater (deep)

Question 82

Critical Flow is

Answer 82

Fr = 1

Question 83

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

Answer 83

Static discharge head

Question 83

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

Answer 83

Open channel flow

Question 84

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

Answer 84

Aquaponics

Question 85

It is also called the vadose zone

Answer 85

Saturated zone

Question 86

An artesian well is an example of:

Answer 86

Confined Aquifer

Question 87

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

Answer 87

Yellow

Question 88

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?

Answer 88

Red

Question 89

The infiltration equation based on the exhaustion process is the.

Answer 89

Horton

Question 90

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

Answer 90

overhead sprinkler

Question 91

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

Answer 91

elevation

Question 92

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

Answer 92

Herringbone

Question 93

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

Answer 93

relay cropping.

Question 94

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

Answer 94

Bafleboard

Question 95

Surveying error about sa difference

Answer 95

Discrepancy error

Question 96

Surveying error about sa instrument

Answer 96

Systematic error

Question 97

Surveying error about sa computation

Answer 97

Analytic error

Question 98

Surveying error about sa personal matters

Answer 98

Human error

Question 99

Plant stem blast is commonly caused by

Answer 99

Fungi

Question 100

Which of the following has the highest bearing capacity?

Answer 100

Rock

Question 101

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

Answer 101

Zing

Question 102

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

Answer 102

Uniform flow

Question 103

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

Answer 103

Aquiclude