CIT - Certified Irrigation Technician Irrigation Principles and Components 2

Question 1

A rotary sprinkler head is most appropriate for which type of irrigation application?

Accepted Answer

Large turf areas over 25 feet in any direction

Answer

Small planting beds under 6 feet wide

Answer

Container plants on a patio

Answer

Ground cover under dense tree canopy

Question 2

What is the purpose of a check valve (CV) built into a sprinkler head or at the base of a riser?

Accepted Answer

To prevent low-head drainage — water draining from sprinkler heads at the lowest point on a zone after the valve closes

Answer

To prevent backflow into the potable water supply

Answer

To regulate the operating pressure at the head

Answer

To filter debris from entering the nozzle

Question 3

Matched Precipitation Rate (MPR) nozzles are important because they ensure that:

Accepted Answer

Full-circle, half-circle, and quarter-circle heads all apply water at the same rate per unit area

Answer

All heads operate at the same pressure

Answer

All zones use the same amount of water

Answer

All sprinklers have the same throw radius

Question 4

A swing joint assembly connecting a sprinkler head to the lateral pipe serves what primary purposes?

Accepted Answer

To allow height adjustment and provide flexible connection that absorbs impact and ground movement

Answer

To reduce water pressure at the head

Answer

To act as a check valve against low-head drainage

Answer

To increase the flow rate to the sprinkler

Question 5

The precipitation rate of a sprinkler head is defined as:

Accepted Answer

The depth of water applied per unit of time, typically measured in inches per hour

Answer

The total gallons of water the head delivers per cycle

Answer

The distance the sprinkler throws water

Answer

The pressure at which the head operates

Question 6

A pop-up sprinkler head with a 4-inch pop-up height is most appropriate for:

Accepted Answer

Standard maintained turf grass mowed to 2-3 inches

Answer

Areas with tall ornamental grasses over 12 inches

Answer

Ground cover plantings up to 12 inches tall

Answer

Raised planter beds with 8-inch borders