Texas Irrigation License Exam 2024: 150 Questions with Detailed Answers, Exams of European Computer Driving Licence (ECDL)

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TEXAS IRRIGATION LICENSE EXAM 2024 ACTUAL EXAM COMPLETE 150 QUESTIONS WITH DETAILED VERIFIED ANSWERS (100% CORRECT ANSWERS) ALREADY GRADED A+ A licensed irrigator must renew his/her every ______ years. - CORRECT ANSWER >>>>three ________, _________, and _________ are the goals of the TCEQ. - CORRECT ANSWER >>>>Enforcement, Water Quality, Waste management Licensed ______ are responsible for obtaining permits and inspections. - CORRECT ANSWER

irrigators

_______________ can install an irrigation system - CORRECT ANSWER >>>>Both ( Licensed Irrigator and Technician ) A TECHNICIAN can alter the irrigation design only when he/she ___________. - CORRECT ANSWER

receives approval from the licensed irrigator The "Commission" refers to _______ - CORRECT ANSWER >>>>Texas Commission on Environmental Quality (TCEQ) The Texas Irrigator's Advisory Council is made up of __ members - CORRECT ANSWER >>>>nine The members of the Texas Irrigator's Advisory Council are appointed by _________. - CORRECT ANSWER >>>>the Texas Commission on Environmental Quality (TCEQ) The Texas Irrigator's Advisory Council must have ___ representatives of the public - CORRECT ANSWER >>>>THREE

agency approved continuing education credits - CORRECT ANSWER >>>>FALSE, at least 24 hours If continuing education credits are not completed before the license'd renewal date, the irrigator will ______ - CORRECT ANSWER >>>>lose their license. A complaint can be filed over the phone if accurate records are taken - CORRECT ANSWER >>>>FALSE The "Rules and Regulations for licensed Irrigators" as presented but he TCEQ states that a design of the proposed irrigation system must be provided to the home owner once the jib has been completed. - CORRECT ANSWER >>>>TRUE On all installations of new irrigation systems, a licensed irrigator must present the customer a written statement of guarantees for materials and labor furnished in the installation of the system - CORRECT ANSWER >>>>TRUE

According to the "Rules and Regulations for Licensed Irrigators" an irrigation system MUST be designed and installed in a manner that promotes water conservation. - CORRECT ANSWER >>>>TRUE Absorption Rate is also known as ______. - CORRECT ANSWER >>>>infiltration rate An atmospheric Vacuum breaker id commonly referred as an ______ - CORRECT ANSWER

anti-siphon The larger the gauge number, - CORRECT ANSWER Smaller the diameter of the wire __________ ___________ is when all the heads discharge varying amounts of water, combining to produce uniform coverage - CORRECT ANSWER Matched Precipitation Static Pressure - All pressure losses = - CORRECT ANSWER >>>>Dynamic Head Pressure

Emitters use _____ to measure precipitation rate - CORRECT ANSWER >>>>GAL PRE HOUR (GPH) Spray heads use ___ to measure precipitation rate - CORRECT ANSWER >>>>GAL PER MIN (GPM) Pressure is lost as water moves through the piping is a result of _________ - CORRECT ANSWER

FRICTION The design pressure should not exceed ________ of the static pressure - CORRECT ANSWER >>>>90% Sleeves should be at least ______ larger than the irrigation piping required - CORRECT ANSWER two sizes PVC pipe with the same physical dimensions as iron pipe. - CORRECT ANSWER >>>>SCHEDULE PIPE ________ is the process of plant material giving off water vapor from their leaves - CORRECT ANSWER TRANSPIRATION

A shock wave of water created by a fast closing valve is called _______ - CORRECT ANSWER

Water Hammer How do you denote the "Designation Code" for PVC pipe - CORRECT ANSWER >>>>Type# + Grade# + psi/ ([ex] PVC pipe Type One, Grade Two, 2000 psi DP =

The act of chemically fusing PVC pipe and fittings together is called - CORRECT ANSWER >>>>Solvent Welding PVC stands for - CORRECT ANSWER >>>>polyvinyl chloride The _________ is the flexible part of an automatic valve which regulates the passage of water - CORRECT ANSWER >>>>DIAPHRAGM

side of the device is _________ - CORRECT ANSWER

Back Pressure _____________ is most recommended for system with fertilizer injectors - CORRECT ANSWER Reduced Pressure Principle For low hazard applications, ________ is recommended - CORRECT ANSWER >>>>ANY BACK FLOW DEVICE The ________________. can be installed below grade ( ground level ) - CORRECT ANSWER Double Check Valve Assembly _________, ___________, and ___________ can be under constant pressure - CORRECT ANSWER Pressure Vacuum Breaker, Double Check Valve Assembly,

Reduced Pressure Principle ________ and _______ are acceptable back flow devices where there is a possibility of back pressure

• CORRECT ANSWER >>>>Double Check Valve Assembly, Reduced Pressure Principle __________, __________, and _________ are back flow devices recommended to prevent back siphonage - CORRECT ANSWER >>>>Atmospheric Vacuum Breaker, Pressure Vacuum Breaker, Double Check Valve Assembly An atmospheric vacuum breaker is not suitable for ___________ - CORRECT ANSWER >>>>Back Pressure A pressure vacuum breaker, unlike the atmospheric vacuum breaker,_________ - CORRECT ANSWER

will operate satisfactory under constant pressure Back flow in the water distribution system can be caused by ________ and _________ - CORRECT ANSWER >>>>Back Pressure and Back Siphonage

_________________ back flow device will protect against high hazard and back pressure - CORRECT ANSWER >>>>Reduced Pressure Zone An atmospheric vacuum breaker must be installed _____ inches above the highest water outlet (spray head, emitters, etc) - CORRECT ANSWER >>>>SIX A reduced pressure principle device must be installed ____ - CORRECT ANSWER >>>>twelve inches above ground level (grade) A dual check valve is approved to protect against - CORRECT ANSWER >>>>NOTHING, dual check isn't a thing, Double check is _______ determines which back flow device you install - CORRECT ANSWER >>>>Degree of Hazard If water hammer is a problem, then a PVB may be used if _________ - CORRECT ANSWER >>>>a PVB cannot protect against water hammer

_______ ______ have the highest precipitation rate

• CORRECT ANSWER >>>>SPRAY HEADS _______ ________ ________ would provide the highest precipitation rate for any given property - CORRECT ANSWER >>>>Triangular Head Spacing Precipitation rates from most spray heads _____________ - CORRECT ANSWER >>>>exceeds the infiltration rate in most tight soils ________ soil holds the most water - CORRECT ANSWER >>>>CLAY _______, _________, and _______ affect the precipitation rate of a rotary head - CORRECT ANSWER >>>>Erratic Head Spacing, Nozzle Size, Head Pressure With most rotary heads, if you adjust the arc down (for instance, from 360° to 180°), precipitation rate _________ - CORRECT ANSWER >>>>INCREASES

The licensed irrigator should base his/her design on __________ - CORRECT ANSWER >>>>average nighttime wind speeds The _____ ____ is the part of a sprinkler system that will be under constant pressure - CORRECT ANSWER >>>>MAIN LINE A gate valve will have _________ - CORRECT ANSWER >>>>Less pressure loss than a globe valve of equal size Schedule 40 fittings can be solvent welded to: - CORRECT ANSWER >>>>Schedule 40 pipe, Class Pipe, schedule 80 pipe, Potable water is _____ - CORRECT ANSWER

water that suitable for human consumption the "C" valve - CORRECT ANSWER >>>>The lower the "C" valve, the greater the friction loss

The main design factor that affects the effectiveness of a sprinkler system is __________ - CORRECT ANSWER >>>>PRECIPITATION RATE Conventional spray heads discharge a spray pattern that is usually ______ in shape - CORRECT ANSWER

CIRCULAR __________ _________ __________ would be most affected by adverse wind - CORRECT ANSWER ROTARY TYPE HEADS A well designed rotary system can be just as CLAY _______, _________, and _______ affect the precipitation rate of a rotary head - CORRECT ANSWER >>>>Erratic Head Spacing, Nozzle Size, Head Pressure With most rotary heads, if you adjust the arc down (for instance, from 360° to 180°), precipitation rate _________ - CORRECT ANSWER >>>>INCREASES The licensed irrigator should base his/her design on __________ - CORRECT ANSWER >>>>average nighttime wind speeds The _____ ____ is the part of a sprinkler system that will be under constant pressure - CORRECT ANSWER >>>>MAIN LINE A gate valve will have _________ - CORRECT ANSWER >>>>Less pressure loss than a globe valve of equal size Schedule 40 fittings can be solvent welded to: - CORRECT ANSWER >>>>Schedule 40 pipe, Class Pipe, schedule 80 pipe, Potable water is _____ - CORRECT ANSWER >>>>water that suitable for human consumption the "C" valve - CORRECT ANSWER >>>>The lower the "C" valve, the greater the friction loss The main design factor that affects the effectiveness of a sprinkler system is __________ - CORRECT ANSWER >>>>PRECIPITATION RATE Conventional spray heads discharge a spray pattern that is usually ______ in shape - CORRECT ANSWER >>>>CIRCULAR __________ _________ __________ would be most affected by adverse wind - CORRECT ANSWER >>>>ROTARY TYPE HEADS A well designed rotary system can be just as efficient as a well designed system with spray heads

• CORRECT ANSWER >>>>TRUE _________ _________ is resistant to UV light - CORRECT ANSWER >>>>polythylene tubing Electric Valves are classified as - CORRECT ANSWER

NORMALLY CLOSED

The best measure of the amount of water the needs to be replaced by the irrigation system is ______ - CORRECT ANSWER >>>>evapotranspiration rate The basic reason for drip irrigation is very successful for plant growth is _____ - CORRECT ANSWER

soil moisture content can be kept at a relative constant and proper level The reasons why drip is considered very water efficient and conserves water is that _____ - CORRECT ANSWER >>>>it is precise in water placement and control and less water is lost to wind and evaporation ____ ____ _____ cause for the greatest evaporation

• CORRECT ANSWER >>>>LONG RUN TIMES ___________ are emission devices used in confined area, like tree wells - CORRECT ANSWER >>>>MINI- SPRINKLERS

shrub heads on risers __________ - CORRECT ANSWER >>>>can be a hazard and should be placed against a wall or structure Excessive water pressure for a sprinkler system - CORRECT ANSWER >>>>Can shorten the operating life of the heads, uneven distribution of water, major cause for water waste Never place rotary and spray heads on the same circuit because _______ - CORRECT ANSWER

their precipitation rates vary greatly As the wall thickness of a pipe increases the inside diameter - CORRECT ANSWER >>>>decreases polythylene tubing Electric Valves are classified as - CORRECT ANSWER >>>>NORMALLY CLOSED The best measure of the amount of water the needs to be replaced by the irrigation system is ______ - CORRECT ANSWER >>>>evapotranspiration rate The basic reason for drip irrigation is very successful for plant growth is _____ - CORRECT ANSWER >>>>soil moisture content can be kept at a relative constant and proper level The reasons why drip is considered very water efficient and conserves water is that _____ - CORRECT ANSWER >>>>it is precise in water placement and control and less water is lost to wind and evaporation ____ ____ _____ cause for the greatest evaporation - CORRECT ANSWER >>>>LONG RUN TIMES ___________ are emission devices used in confined area, like tree wells - CORRECT ANSWER >>>>MINI- SPRINKLERS shrub heads on risers __________ - CORRECT ANSWER >>>>can be a hazard and should be placed against a wall or structure Excessive water pressure for a sprinkler system - CORRECT ANSWER >>>>Can shorten the operating life of the heads, uneven distribution of water, major cause for water waste Never place rotary and spray heads on the same circuit because _______ - CORRECT ANSWER >>>>their precipitation rates vary greatly As the wall thickness of a pipe increases the inside diameter - CORRECT ANSWER >>>>decreases As the wall thickness of a pipe increases the outside diameter - CORRECT ANSWER >>>>stays the same In the case of 1" pipe, the 1" is - CORRECT ANSWER the nominal size