Irrigation Question and answer

SP - TL = ???

(AHP) Actual Head Pressure

State law: Velocity should not exceed ?

5 FPS

Type "k" copper water tub max FPS?

9 FPS

A graphic representation of precipitation is called: a. A plan b. An irrigation design c. A Water Audit d. A desogram

A desogram

(AHP)

Actual Head Pressure

Dynamic, water in motion and

Actual head pressure

What small mechanical device is used to limit water flow to a very low drip or trickle?: a. A flood bubbler b. A micro-spray c. A Multi-stream rotory d. An emitter

An emitter

Contour lines represent?

Changes in elevation

Safe flow is sometimes referred to as?

Design GPM

MHP + TL = or RHP + TL =

Design Pressure

How to get a slope percentage?

Divide elevation rise by distance run Divide rise by run

How to get Static pressure Multiply your elevation x .433, Or

Divide your elevation by 2.31 Elevation divided by 2.31 = Static pressure

A timing device which signals the automatic vales to open or close is called a: a. Remote control valve b. Controller c. Clock d. Timer E. B, C, and d

E. B, C, and d Controller Clock Timer

Static pressure =

Elevation x .433

Static pressure (water at rest) Can be increased by what two things?

Elevation, Or a pump

Which of the following is part of the definition of an irrigation system? a. Irrigate landscape vegetation b. Temporary installation c. Dust reduction d. Erosion controll e. a, c, & d.

Irrigate landscape vegetation, Dust reduction, Erosion controll

Design Pressure for a Meter =

Maximum Flow x .75

Design Pressure

Minimum head pressure plus the total of all the pressure losses DP = RHP + TL

Rise divided by run = ???

Percentage of slope

RPZ

Reduced pressure zone device

To calculate TL, you need to start by gathering what information?

Size, Gallons Per Minute, Length, x 100' loss = Total Loss

How to get Actual Head Pressure

Static Pressure minus all pressure losses SP - TL = AHP

TCEQ

Texas Commission on Environmental Quality

Velocity definition

The speed of the water as it flows through the pipe Measured in FPS

2.31 Foot of head = 1 PSI True or false

True

Design pressure should always be lower than static pressure True or false

True

RHP + TL = DP True or False

True

RPZ has the highest P.L True or False

True

RPZ has the highest PL of any back flow device True or False

True

Static pressure

Water at rest

Dynamic

Water in motion

The impact sprinkler head was introduced by Rain Bird in: a. 1993 b. 1985 c. 1890 d. 1910

a. 1933

A motorized device which creates, or boosts pressure, is: a. A pump b. A pressure relief valve c. A pressure regulator d. A quick coupler valve

a. A pump

A measuring device that has measurements as a given number of feet per inch is: a. An Engineer Scale b. A Contour line c. A Gauge d. An Architects Scale

a. An Engineer Scale

A drawing of an installed irrigation system showing major components is: a. Called a record drawing b. A corrected document for city use c. An irrigation documentation d. Is required by all cities

a. Called a record drawing

Minimum head pressure plus the total of all the pressure losses equals: a. Design pressure b. Actual head pressure c. Hydraulics d. Operating pressure

a. Design pressure

The art and management of applying water to the landscape to encourage the growth of plant material and support water conservation is: a. Landscape irrigation b. An irrigation system c. an irrigation design d. Good for business and the environment

a. Landscape irrigation

Efficient irrigation is geared more directly toward: a. Manufacturers, irrigation contractors, homeowners, and proper education b. Federal government c. City government d. State government

a. Manufacturers, irrigation contractors, homeowners, and proper education

Backsiphonage is caused by: a. Negative or sub-atmospheric pressure b. Greater pressure in the downstream side than the supply side c. A pump d. An increase in pressure on the city main

a. Negative or sub-atmospheric pressure

A properly designed irrigation system can? a. Save water, time, and money b. Save installation time c. Cost more d. Last longer

a. Save Water, time, and money

The shortage of water is a result of: a. Water being a fixed resource b. A decrease in the population c. A decrease in water usage per year d. Larger sprinkler heads

a. Water being a fixed resource

For irrigation contractors, water conservation starts with: a. The proper back flow device b. A great design c. A good maintenance contract d. The city irrigation regulations

b. A great design

A device used to turn a quick coupler valve on and off is: a. A sprinkler key b. A quick coupler key c. A faucet Handle d. A solenoid

b. A quick coupler key

Static Pressure minus all pressure losses will give you? a. Design Pressure b. Actual Head Pressure (AHP) c. Minimum head pressure d. Pressure to design to

b. Actual Head Pressure (AHP)

Manufacturers can impact water conservation by producing: a. Products at a lower cost b. Better low-volume irrigation products c. Sizing components properly d. More efficient irrigation scheduling

b. Better low-volume irrigation products

Which device can be used to help prevent freezing of water in the piping: a. Pressure relief valve b. Drain Valve c. Pump d. Air relief valve

b. Drain Valve

Slow application rates expressed in GPH are usually referring to what type of irrigation: a. Spray heads b. Drip irrigation c. Micro-spray heads d. Rotary heads

b. Drip irrigation

The slow application of water directly to the root zone using very low pressure is considered: a. Spray heads b. Drip irrigation c. Bubblers d. Micro-sprays e. Rotary Heads

b. Drip irrigation

Which of the following is not part of the definition of an irrigation system? a. Irrigate landscape vegetation b. Temporary installation c. Dust reduction d. Erosion controll

b. Temporary installation

Heads that have valves incorporated within them are referred to as: a. Hydraulic valves b. Valve-in-heads c. Ball driven heads d. Turf heads e. Golf heads

b. Valve-in-heads

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

c. A diaphragm

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

c. Air relief valve

If the pressure in the sprinkler system (or downstream side) exceeds the pressure in the supply side, what phenomenon con occur? a. A Break b. Misting heads c. Backpressure d. Backsiphonage

c. Backpressure

Possible solutions to the scarcity of water include: a. Allowing only rock and desert landscapes b. Watering only once a week c. Building desalination plants d. Limiting irrigation systems to commercial properties only

c. Building desalination plants

Which is not a possible solution for the scarcity of water?: a. Xeriscaping b. Efficient landscape irrigation c. Construction of more dams d. Use of recycled water

c. Construction of more dams

Pressure Compensation devices help save water because they: a. Keep the water pressure high enough for good coverage b. Compensate 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

c. Help eliminate misting or fogging at the sprinkler heads

A method of maintaining a constant discharge pressure regardless of inlet pressure is called: a. A pressure relief valve b. matched precipitation c. Pressure compensation d. Minimum head pressure

c. Pressure compensating

The process of Calculating and managing the time and amount of water to apply to the landscape is referred to as: a. Water management b. Water application c. Scheduling d. Programming the controller

c. Scheduling

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

c. Sizing components

The proper watering time is early morning because: a. Homeowners will not get wet when leaving the house b. The city inspectors will not see your system run longer than allowed c. Sprinkler patterns are generally less distorted from the wind d. Most Homeowners don'ts want to see the water running

c. Sprinkler patterns are generally less distorted from the wind

Basic irrigation dates back: a. Hundreds of years b. Since Rain Bird was founded c. Thousands of years d. Seventy-five years

c. Thousands of years

A swing joint is used: a. To help negotiate a curve in the trench b. For above ground applications c. To Prevent damage to the head d. Only in commercial applications

c. To Prevent damage to the head

The issue of top priority in irrigation today is: a. How to sell more systems in our present economy b. New technology in back flow protection c. Water conservation d. City and State regulations on licensing

c. Water conservation

What causes back pressure? a. Gravity b. Atmospheric pressure c. Pump d. A & C

d. A & C. Pump. Gravity

A device used in electrical troubleshooting is: a. A sensor b. An electrical control valve c. A check valve d. A digital multimeter

d. A digital multimeter

A cross connection is any actual or potential connection between a potable water supply and: a. A well b. A chemical plant c. A pump d. Any source that has the possibility to introduce polluted or contaminated water back into the potable water that is supplying it.

d. Any source that has the possibility to introduce polluted or contaminated water back into the potable water that is supplying it.

What can cause backsiphonage? a. A flow valve being turned down b. A break in the city main c. The fire department using water from the city fire hydrant to put out a fire d. B & C

d. B & C A break in the city main. The fire department using water from the city fire hydrant to put out a fire

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

d. Backflow

A valve that allows water to travel in only one direction is called a: a. Remote control valve b. Drain valve c. electrical valve d. Check valve e. Hydraulic valve

d. Check valve

Waste water, such as from your bath, sink, or washing machines, is called: a. Black water b. Contaminated water c. Polluted water d. Greywater

d. Greywater

In order to run multiple sprinkler heads, with varying arcs, on the same zone, the sprinkler heads must have: a. Low volume b. Good coverage c. Pressure compensation nozzles d. Matched precipitation rates

d. Matched precipitation rates

One of the seven. basic landscaping principles of Xeriscaping is: a. Larger turf areas b. Only rock landscapes c. Soil removal d. mulching

d. Mulching

Absorption rate is defined as: a. How fast the water can be absorbed in the atmosphere b. Rate that run-off is absorbed in the ground c. The same as application rate d. Rate at which soil will accept water

d. Rate at which soil will accept water

Domestic or municipal wastewater which has been treated to a quality suitable for beneficial use, such as landscape irrigation, is called: a. Reused water b. Contaminated water c. Potable water d. Reclaimed water or recycled water

d. Reclaimed water or recycled water

The degrees of coverage of a sprinkler from one side of a pattern to the other is: a. Application Rate b. Percolation rate c. The trajectory d. The arc

d. The arc

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

d. The turn of the 20th century

An Atmospheric Vacuum Breaker: a. Will stop back pressure b. Has to be installed 6" higher than the highest head or outlet c. will stop backsiphonage d. Will handle constant pressure e. B&C

e. B&C Has to be installed 6" higher than the highest head or outlet. will stop backsiphonage.

What type of valve would be installed to offer water to a remote location? a. Ball valve b. Drain valve c. Electrical valve d. Check Valve e. Quick-coupler valve

e. Quick-coupler valve

Xeriscaping: a. Promotes water conservation b. Utilizes Mulching & Efficient irrigation c. Is only applicable in desert regions d. a & c e. a & b

e. a & b Promotes water conservation & Utilizes Mulching & Efficient irrigation

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. Absorption rate e. a. & c.

e. a. & c. Precipitation rate Application rate