Water Educational Training Services

Flashcards generated from lecture notes for exam preparation.

Absorption rate is also known as what?

infiltration rate

SVB is an abbreviation for what?

spill-resistant vacuum breaker

Which of the following statements about control wires is correct?

The larger the gauge number, the smaller the wire.

Term used when all heads discharge varying amounts of water closely?

matched precipitation

Static pressure all pressure losses =?

Design Pressure

AWWA is an abbreviation for what?

American Water Works Association

A valve permitting water to flow in one direction is called what?

Check Valve

One complete operation of a controller through all programmed stations is called what?

Cycle

Minimum pressure required for a system to operate properly is known as what?

Design pressure

Type of damage occurring when water travels unexpectedly fast is called what?

Water hammer

Device which allows water to flow out slowly in a drip irrigation system is called what?

Emitter

Which discharge rate best describes that of an emitter?

2 GPH

Which discharge rate best describes that of a residential spray head?

2 GPM

When water flows through piping, pressure is lost as a result of what?

friction

As a general guideline, the design pressure should not exceed what percentage?

75%

Generally, sleeves should be at least how much larger than the internal pipe?

2 sizes

PVC pipe with the same physical dimensions as iron pipe is called what?

Schedule pipe

The process of plant material giving off water vapor from the leaves is called what?

Evapotranspiration

Shock wave created by a fast closing valve is called what?

Water hammer

What would the standard designation code be for pressure rate PVC pipe, Type one, Grade two, 2000 psi hydrostatic design press?

1220

Act of chemically fusing PVC pipe and fittings together is called what?

Solvent welding

PVC is an abbreviation for what?

Polyvinyl Chloride

Flexible part of an automatic valve which regulates the passage of water is called what?

Diaphragm

What does I.P.S. stand for?

iron pipe size

What does M.I.P. stand for?

male iron pipe

How often does a licensed irrigator need to renew his or her license according to the Rules and Regulations?

once every three years

Which is/are the strategic goal/goals of the TCEQ?

All the above

Which of the following licensed individuals is responsible for ensuring that an irrigation system complies with all state and local codes?

Both

Which of the following can install an irrigation system?

Both

When is it acceptable for a Licensed Technician to alter the irrigation design?

never

The term "Commission" refers to what?

Texas Commission on Environmental Quality

How many members make up the Texas Irrigator's Advisory Council?

9

Members of the Texas Irrigator's Advisory Council are appointed by whom?

The Governor

How many members of the Texas Irrigator's Advisory Council must be members of the public?

3

What is the minimum depth of pipe coverage?

6 inches

Which is a function of an irrigation system?

all the above

After a license has expired, the only way to obtain another one is to do what?

go through the re-examination process again.

What will happen if an irrigator fails to receive written notice from the TCEQ that his/her license is about to expire?

The irrigator will lose the license if they fail to renew even without written notice.

You must be licensed or work under the supervision of a licensed irrigator to install, maintain, alter, repair irrigation systems for a living. True or False?

true

In order to renew an Irrigator License you must pay a renewal fee and complete 24hrs of agency approved continuing education credits. True or False?

false

What will happen if continuing education credits are not completed by the expiration date?

The irrigator will lose the license.

The "Rules and Regulations for Licensed Irrigators" as presented documentation of the proposed irrigation system must be provided to the homeowner before the system is completed. True or False?

false

On all installations of new irrigation systems a licensed irrigator shall furnish the client a written statement of guarantees for materials and labor furnished for the system. True or False?

true

According to the "Rules and Regulations for Licensed Irrigators" irrigation systems shall be designed and installed in a manner that promotes water conservation. True or False?

true

An irrigation system with any kind of injection device associated with it would be considered what?

Health Hazard

Which backflow device is required to be used with pumps?

Which ever one is required by state or local codes.

The mechanical prevention of reverse flow, or back siphonage, of non-potable water from an irrigation system into the public water system is called what?

Back flow prevention

Any pressure, regardless of its source, against the outlet side of the backflow prevention assembly which exceeds the supply pressure against the inlet side of the device is called what?

Back Pressure

Which backflow device is most recommended for systems with fertilizer injector pumps?

Reduced pressure principle

Which backflow device is recommended for low hazard applications?

Spill-resistant vacuum breaker

Which backflow device can be installed below grade (ground level)?

both c and d

Which backflow device can be under constant pressure?

Reduced pressure

Which backflow device is acceptable to use when there is a possibility of backpressure?

c and d

Which backflow device is recommended to prevent back siphonage?

all of these

A spill-resistant vacuum breaker is not suitable for _?

Back pressure

Which statement is correct?

A pressure vacuum breaker will operate satisfactorily unless the gate valve is open.

Backflow in the water distribution system can be caused by:

Both a and b

A pressure vacuum breaker may be installed with a:

none of these

Backflow prevention assemblies on high hazard systems should be tested:

if water comes out of the test cocks when they are opened

A control valve downstream a backflow device may result in:

Back Pressure

Where are the shut-off valves located on an SVB?

Both inlet and outlet side

How many test cock are on a D.C.A.?

4

What will happen if an PVB is installed in the wrong direction?

Water will escape through the top portion of the device.

Which backflow device will protect against high hazard and back pressure?

Reduced pressure zone

In an irrigation system, an atmospheric vacuum breaker must be installed above the highest water outlet.

6

A reduced pressure principle device must be installed how high?

12" above the highest downstream outlet

A dual check valve is approved to protect against what?

back siphonage

Which of the following determines which backflow device you install?

all of these

If water hammer is a problem, then a PVB may be used if:

a master valve is installed right before the PVB

Which has the highest precipitation rate?

spray heads