Installation Flashcards

Section 2 of exam

1
Q

When calculating the available water capacity of an irrigation site, irrigators refer to that amount in

A

GPM [2]

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2
Q
  1. When using drip irrigation, the water volume of individual drip emitters is generally expressed in:
A

GPH

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3
Q

An irrigator is required to maintain records of irrigation installations for a period of:

A

3 YEARS

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4
Q

A licensed irrigator inspector cannot engage in irrigation services that include: A licensed irrigator inspector cannot engage in irrigation services that include:

a). 	Selling b). Designing c). 	Installing c). 	Repairing d). All of the above
A

d). All of the above

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5
Q

Landscape irrigation, as we know it, has been around since:
a). The 1930’s
b). Since the development of PVC pipe
c). The beginning of time
d). The turn of the 20th century

A

d). The turn of the 20th century

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6
Q

For an irrigation system to work, actual head pressure has to be:
a). Less than minimum head pressure
b). Equal to minimum head pressure
c). Greater than minimum head pressure
d). Equal to, or greater than minimum head pressure

A

a). Less than minimum head pressure

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7
Q

Which of the following describes the rate at which water is applied by sprinkler heads in a certain pattern:
A)Precipitation rate
b). Infiltration rate
c). Application rate
d). Percolation rate
e). A & C

A

A)Precipitation rate

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8
Q

Static Pressure minus total pressure losses equals:
DESGIN PRESSUIRE
b). Actual head pressure
c). Minimum head pressure
d). Pressure to design to

A

b). Actual head pressure

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9
Q

The arc is defined as the:
a). Application rate
b). Percolation rate
c). The trajectory of sprinkler heads
d). Degrees of coverage of a sprinkler from one side of a pattern to the other side.

A

d). Degrees of coverage of a sprinkler from one side of a pattern to the other side.

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10
Q

A timing device which signals the automatic valves to open close is ?
A). An Irrigation timer
b). A Clock
c). An Irrigation controller
d). All of the above

A

d). All of the above

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11
Q
  1. Design pressure is:

a). Static pressure plus the total of all pressure losses
b). Static pressure minus the total of all pressure losses
c). Minimum head pressure plus the total of all pressure losses
d). Minimum head pressure minus total of all pressure losses

A

c). Minimum head pressure plus the total of all pressure losses

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12
Q

The flexible portion of the remote control valve which regulates the passage of water through the valve is called.
a).diaphragm
b). The solenoid
c). The flow control
d). External manual bleed

A

a). A diaphragm

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13
Q

. To gain .866 PSI, your piping would have:
. A) Elevation gain of one foot
b). A pump installed
c). Increased water speed
d). Elevation loss of two feet

A

d). Elevation loss of two feet

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14
Q

loss of .433 PSI is a result of:
a). A piping elevation loss of 1 foot
b). A restriction in the line
c). An piping elevation gain of 1 foot
An elevation gain or loss in the piping

A

c). An piping elevation gain of 1 foot
An elevation gain or loss in the piping

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15
Q

A method of maintaining a constant discharge pressure regardless of inlet pressure is called
a). A pressure relief valve
b). Optimum pressure at the head
c). Pressure compensating
d). Minimum head pressure

A

c). Pressure compensating

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16
Q

Calculating and managing the time and amount of water to apply to the plant material is referred to as:
a). Scheduling
b). Management of water
d). Water application
d). Programming

A

a). Scheduling

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17
Q

Which represents matched precipitation rates?
a). full, half, quarter circle all 4 GPM
b). quarter circle 2.5 GPM, half circle 5 GPM, full circle 10 GPM
c). all heads, regardless of pattern, throwing the exact GPM
d). quarter heads 1 GPM, half heads 2 GPM, full heads 3 GPM
e). None of the above

A

b). quarter circle 2.5 GPM, half circle 5 GPM, full circle 10 GPM

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18
Q
  1. Increased pressure at the head will result in:
    a). Damage to the head
    b). Better performance
    c). An increase in GPM and radius
    d). A decrease in radius and increase in GPM
A

c). An increase in GPM and radius

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19
Q
  1. Bubblers would need to be installed in an area that is:
    a) For trees
    b). On a slope
    c). Level and bordered
    d). Very small
A

c). Level and bordered

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20
Q
  1. A filter, flush valve, and pressure regulator would typically be used with:
    a). Flood bubblers
    b). Drip irrigation
    c). Micro-sprays
    d). Rotary sprinklers
A

b). Drip irrigation

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21
Q
  1. What does a check valve do?

a). Allows water to go in only one direction
b). Checks for breaks in the lines
c). Monitors water usage
d). Allows water to shut off in case of a break

A

a). Allows water to go in only one direction

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22
Q

What types of copper pipe are available and which has the heaviest wall thickness
a). K, M, and O with all the same thickness
b). K, L, and M with K having the heaviest wall thickness
c). K, L, and M with L having the heaviest wall thickness
d). Only K

A

b). K, L, and M with K having the heaviest wall thickness

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23
Q

How is the smoothness on the inside of the pipe rated?
a). A-factor
b). It is not rated
c). How long the pipe will last
d). C-factor

A

d). C-factor

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24
Q
  1. ET-based controllers regulate the irrigation schedule based on what?

a). Evaporation
b). Transpiration
c). Evapotranspiration
d). Federal watering guidelines
e). A, B, and C

A

e). A, B, and C

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25
Q
  1. How many members, licensed irrigators, and members that are representatives of the public does the irrigator advisory council have?
    a). 9, 5, and 4
    b). 9, 6, and 3
    c). 6, 3, and 3
    d). 10, 5, and 5
A

b). 9, 6, and 3

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26
Q
  1. How ❏❏ many hours of CEU’s does a licensed irrigator need to renew his/her three year license?
    a). 8
    b). 12
    c). 24
    d). 16
A

c). 24

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27
Q
  1. Which of the following is not acceptable?
    a). Threading a plastic fitting into a metal fitting
    b). Threading a metal fitting into a plastic fitting
    c). Threading a metal fitting into a metal fitting
    d). Threading a plastic fitting into a plastic fitting
A

b). Threading a metal fitting into a plastic fitting

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28
Q

What happens if two different types of metal pipes are connected together?

a). Electrolysis
b). A pressure problem
c). Contamination
d). Pollutionff

A

a). Electrolysis

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29
Q

Which devices can stop backpressure?
a). PVB, DCA, RP, and AVB
b). RP, DCA, and PVB
c). AVB and PVB
d). PVB and DCA
e). DCA and RP

A

e). DCA and RP

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30
Q

Which devices can handle constant pressure?
a). PVB, DCA, RP, and AVB
b). DCA and RP
c). RP, DCA, and PVB
d). AVB and PVB
e). PVB and DCA

A

c). RP, DCA, and PVB

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31
Q

The approved backflow devices for non-health hazards include:
a). AVB & RP
b). RP, DCA, and PVB
c). AVB and PVB
d). PVB and DCA
e). All devices (AVB, PVB, DCA, and RP)

A

e). All devices (AVB, PVB, DCA, and RP)

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32
Q

If there is an on-site sewage facility on site, which backflow is approved?
a). AVB
b). PVB
c). DCA
d). RP
e). B & C

A

d). RP

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33
Q

If major maintenance has to be performed, which backflow device has to be properly installed prior to the repair work being performed?

a). An approved backflow device
b). PVB
c). DCA or PVB
d). RP
e). B & C

A

a). An approved backflow device

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34
Q

If a DCA is installed below ground, what device is required?
a). A filter
b). A flush valve
c). A pressure regulator on the downstream side of the DCA
d). A Y-Strainer installed on the inlet side of the DCA
e). Installing at least 12” deep

A

d). A Y-Strainer installed on the inlet side of the DCA

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35
Q

If there is an additional water source supplying water to a system being supplied by a potable water supply, what device has to be used on with the potable water supply?
a). AVB
b). PVB
c). DCA
d). RP
e). C or D

A

d). RP

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36
Q
  1. What device cannot be used when there is a health hazard?
    a). AVB
    b). PVB
    c). DCA
    d). RP
    e). A and B
A

c). DCA

37
Q

An Atmospheric Vacuum Breaker:
a). Will stop backpressure

b). Has to be installed 6” higher than the highest head or outlet in the retracted position, will not handle constant pressure, and will stop backsiphonage

c). Has to be installed 12” higher than the highest head or outlet in the retracted position, will handle constant pressure, and will stop backsiphonage

d). Has to be installed 6” higher than the highest head or outlet in the retracted position, will not handle constant pressure, and will stop backpressure
e). A and B

A

b). Has to be installed 6” higher than the highest head or outlet in the retracted position, will not handle constant pressure, and will stop backsiphonage

38
Q

what is the unwanted reversal of water flow in an irrigation system?
a). Backpressure
b). Contamination
c). Pollution
d). Backflow

A

b). Contamination

39
Q
  1. If the pressure in the sprinkler system (or downstream side) exceeds the pressure in the supply side, what phenomenon can occur?
    a). Backpressure
    b). Misting heads
    c). Increased performance at the sprinkler heads
    d). Backsiphonage
A

a). Backpressure

40
Q
  1. What can cause backpressure?
    a). Gravity or a pump
    b). Sub atmospheric pressure
    c). A break in the city main
    d). All of the above
A

a). Gravity or a pump

41
Q
  1. What is the maximum number of hours an AVB can have constant pressure?
    a). 2
    b). 6
    c). 12
    d). 8
A

c). 12

42
Q
  1. How high does a pressure vacuum breaker have to be installed?
    a). 6” above the highest head or outlet
    b). 12” above the highest head or outlet
    c). 12” above the grade
    d). 12” above the highest head or outlet in the retracted position
A

d). 12” above the highest head or outlet in the retracted position

43
Q
  1. Which backflow devices incorporate two check valves?
    a). DC
    b). RP
    c). AVB
    d). PVB
    e). A and B
A

d). PVB

44
Q
  1. How many test cocks are there on a DCA, rP, PVB, and AVB, respectively?
    a). 4, 4, 2, and 0
    b). 0, 2, 4, and 4
    c). 4, 4, 4, and 4
    d). 2, 2, 4, and 2
A

a). 4, 4, 2, and 0

45
Q
  1. If the gPM are doubled, the PSI:

a). doubles.
b). triples.
c). quadruples.
d). stays the same.

A

c). quadruples.

46
Q
  1. Hydraulics is:

a). water in motion.
b). the science of dynamic and static water.
c). the study of irrigation designs.
d). study of water pressure.

A

b). the science of dynamic and static water.

47
Q
  1. What is the weight of one gallon of water?
    a). 8.3 pounds
    b). 7.3 pounds
    c). 62.4 pounds
    d). 3.8 pounds
A

a). 8.3 pounds

48
Q
  1. 62.4 pounds represents the weight of:
    a). 5 gallons of water.
    b). a liter of water.
    c). a gallon of water.
    d). a cubic foot of water.
A

d). a cubic foot of water.

49
Q
  1. How many feet of water (in height) does it take to equal 1 PSI?
    a). .433
    b). 2.31
    c). .866
    d). 4.33
A

b). 2.31

50
Q
  1. One foot high of water will create:
    a). 4.62 PSI
    b). 2.31 PSI
    c). .433 PSI
    d). .866 PSI
A

c). .433 PSI

51
Q
  1. How many feet of head are needed to produce 65 psi?

a). 28.2
b). 100
c). 150.1
d). 37.4

A

c). 150.1
65 ÷ .433 = 150.12 feet of head

52
Q
  1. A separate calculation is needed if:
    a). The type of pipe is different
    b). The GPM are different
    c). The size of the pipe is different
    d). All of the above
A

d). All of the above

52
Q
  1. If you have 167 feet of head, what is the psi?
    a). 385.7
    b). 83.5
    c). 118.31
    d). 72.3
A

d). 72.3

53
Q
  1. If your pipe is flowing 34 gpm, what size pipe should be used?
    a). Class 200 ½”
    b). Class 200 1 ½”
    c). Class 200 1 ¼”
    d). Class 200 1”
A

b). Class 200 1 ½”

53
Q
  1. What is not considered in selecting the most taxed zone to work the hydraulics?
    a). Most GPM
    b). Furthest distance
    c). Highest elevation
    d). Lowest elevation
A

d). Lowest elevation

53
Q
  1. Which one of these is a rule to follow when working hydraulics?
    a). Take the most direct route from the point in question back to the city main or point in question
    b). Take the most direct route from the point in question back to the main line or point in question
    c). Pick up the GPM at intersections, but don’t calculate the friction losses on any of the pipe running to those sprinkler heads.
    d). A & C
A

d). A & C

53
Q
  1. An elevation gain in the piping will yield:
    a). a gain in psi.
    b). no change in psi.
    c). loss in psi.
    d). a difference in FPS.
A

c). loss in psi.

53
Q
  1. An elevation loss in the piping will yield:

a). a decrease in psi.
b). an increase in psi.
c). equal velocity.
d). an increase in velocity.

A

b). an increase in psi.

53
Q
  1. What is the maximum acceptable velocity of water in pvc piping?
    a). 6 fps
    b). 10 fps
    c). 5 fps
    d). 9fps
A

c). 5 fps

54
Q
  1. What is the maximum acceptable velocity of water in copper piping?
    a). 6 fps
    b). 10 fps
    c). 5 fps
    d). 9fps
A

d). 9fps

55
Q
  1. An engineer scale is:
    a). A measuring device that has measurements as a given number of feet per inch.
    b). A measuring device that has measurements as a given number of inches per foot.
    c). A measuring device in which a fraction of an inch equals 1 foot.
    d). None of the above.
A

a). A measuring device that has measurements as a given number of feet per inch.

56
Q
  1. In calculating the available water capacity, pressure loss through the water meter should not exceed what percentage of the minimum static water pressure available?
    a). 5
    b). 15
    c). 25
    d). 10
A

d). 10

57
Q
  1. The maximum water flow through the water meter should not exceed:
    a). 75% of the safe flow of the meter.
    b). 50% of the safe flow of the meter.
    c). 25% of the safe flow of the meter.
    d). 10% of the safe flow of the meter
A

a). 75% of the safe flow of the meter.

58
Q
  1. What is the maximum acceptable velocity of the water flow through the copper service line?
    a). 10 fps
    b). 9 psi
    c). 9 fps
    d). 5 fps
A

c). 9 fps

59
Q
  1. Evapotranspiration is a combination of
    a). Humidity and solar heat
    b). Evaporation and transpiration
    c). Solar radiation and wind
    d). Soil type and evaporation
A
60
Q
  1. What is capillary action?
    a). The main effect distributing water vertically through the soil.
    b). The main effect distributing water through the piping.
    c). The main effect distributing chemicals in the soil.
    d). The main effect distributing water horizontally through the soil.
A

d). The main effect distributing water horizontally through the soil.

61
Q
  1. Head spacing is calculated as a percentage of what?
    a). The area the head covers
    b). Diameter of the spray of a given head
    c). Radius of the spray of a given head
    d). Half of the radius of a given head
A

b). Diameter of the spray of a given head

62
Q
  1. If you want the average precipitation rate for an area, which method would work?
    a). Single head method
    b). Triangular spacing method
    c). Specific area method
    d). Total area method
A

d). Total area method

63
Q
  1. Diffusion of spray and rotary sprinkler heads should not exceed:
    a). 10 - 15%
    b). 5 – 10%
    c). 20 – 25%
    d). 25 – 30%
A

d). 25 – 30%

64
Q
  1. Sprinkler heads on a slope should be installed:
    a). at a 25% angle.
    b). Vertical
    c). Perpendicular to the slope
    d). 1” below grade
A

c). Perpendicular to the slope

65
Q
  1. How should you run integrated emitters on a sloped site?
    a). Parallel to the slope
    b). Perpendicular with the slope
    c). Diagonally across the slope
    d). None of the above
A

b). Perpendicular with the slop

66
Q
  1. How can sprinkler heads be spaced?
    a). Up to 35 feet with rotary heads.
    b). Only 5-10% beyond the recommended spacing.
    c). Never beyond the maximum manufacturer’s recommended spacing at a specific pressure.
    d). None of the above
A

c). Never beyond the maximum manufacturer’s recommended spacing at a specific pressure.

67
Q
  1. The service line would be defined as what?
    a). Piping from the city main to the water meter
    b). Piping from the backflow device to the zone valves
    c). Piping from the water meter to the backflow device
    d). A & C
A

d). A & C

68
Q
  1. The maximum velocity in PVC and poly pipe (to prevent damaging pipe or other components of the irrigation system) should be?
    a). 9 FPS
    b). 7.5 FPS
    c). 5 FPS
    d). 5 – 7.5 FPS
A

c). 5 FPS

69
Q
  1. What pipe has a recommended maximum velocity of 9 FPS?
    a). Schedule 40 PVC pipe
    b). Class pipe
    c). Poly pipe
    d). Copper pipe
A

d). Copper pipe

70
Q
  1. What is the maximum FPS when sizing backflow units?
    a). 9 FPS
    b). 7.5 FPS
    c). 5 FPS
    d). 5 – 7.5 FPS
A

b). 7.5 FPS

71
Q
  1. What is a general guideline for sizing zone valves?
    a). 3 - 7 PSI
    b). 3 – 5 PSI
    c). 5 – 9 FPS
    d). 2 – 5 PSI
A

d). 2 – 5 PSI

72
Q

Which of the following is not a basic principle of Xeriscaping?
a. Mulching
b. Efficient irrigation
c. Sizing Components
d. Proper Maintenance

A

c. Sizing Components

73
Q

Pressure compensating devices help save water because they.

a. keep the water pressure high enough for good coverage
b. compensates for the lack of a good design
c. help eliminate misting or fogging at the sprinkler heads
d. allow for fewer heads, thus less water used

A

c. help eliminate misting or fogging at the sprinkler heads

73
Q

A device which signals the automatic valves to open or close is called a :

a. a Sprinkler key
b. a quick coupler key
c. a faucet handle
d. a solenoid

A

b. a quick coupler key

73
Q

A drawling of an installed irrigation system showing major components is:

a. called a record drawling or as built plan
b. a corrected document for city use
c. an irrigation documentation
d. is required by all cities

A

a. called a record drawling or as built plan

74
Q

which device is used to keep debris from being sucked into the line?

a. Flush valve
b. pressure regulator
c. air relief valve
d. filter

A

c. air relief valve

74
Q

what type of valve would be installed to offer water to a remote location ?
a. Ball valve
b. Drain Valve
c. Electric valve
d. Check Valve
e. Quick Coupler valve

A

e. Quick Coupler valve

75
Q

Witch Backflow device uses a pressure rdifferntial relif valve ?
a. RPPA
b. DCVA
c. AVB
d. PVB

A

a. RPPA

76
Q

What type of drip emitters is integrated into the pipping system from the manufacture ?
a. single emitter unit
b. bubbler unit
c. integral emitter
d. micro emitter
e. pressure compensating emitter

A

c. integral emitter

77
Q

Schedual 40 PVC pipe has a higher pressure rating than class pvc pipe:
a. in all sizes
b. in the larger sizes
c. except for class 200
d. in the smaller size up to 1 1/2”

A

d. in the smaller size up to 1 1/2”

78
Q

For an irrigation system to work, actual head pressure has to be:

a. less than minimum head pressure
b. equal to minim head pressure
c. greater then minimum head pressure
d equal to, or greater than minimum head pressure

A

d equal to, or greater than minimum head pressure

79
Q

What is the term used to represent water in motion?

a. Running Water
b. Pressurized Water
c. Flow
d. Dynamic Water

A

d. Dynamic Water

80
Q

The natural force exerted by water is a result of what?

a. The weight of the water above the point of measurement
b. A water Tower
c. A pump
d. A slope

A

a. The weight of the water above the point of measurement