CIT - Certified Irrigation Technician Controllers and Programming 2

Question 1

A client wants to water their lawn at 6:00 AM but the system has 4 zones that cannot run simultaneously due to insufficient water supply. The controller should be programmed to:

Accepted Answer

Stack zones sequentially on the same program with a 6:00 AM start time

Answer

Run all zones at 6:00 AM on the same program

Answer

Create 4 separate programs with staggered start times

Answer

Use cycle and soak on all zones simultaneously

Question 2

What is the purpose of a 'rain delay' feature on an irrigation controller?

Accepted Answer

Suspends irrigation for a user-selected number of days, then automatically resumes normal scheduling

Answer

Permanently disables the controller during rainy months

Answer

Reduces run times by 50% during rain events

Answer

Activates the rain sensor override

Question 3

A controller is described as having 'non-volatile memory.' This means:

Accepted Answer

Programming is retained even if power is lost

Answer

The memory can only store one program at a time

Answer

The controller uses cloud-based storage

Answer

The memory must be reset after each power outage

Question 4

A smart controller uses evapotranspiration (ET) data to adjust irrigation schedules. ET-based controllers primarily calculate water needs based on:

Accepted Answer

Weather parameters including temperature, humidity, wind, and solar radiation

Answer

Soil moisture sensor readings

Answer

Historical rainfall data only

Answer

Flow sensor readings from each zone

Question 5

When programming a controller for cycle and soak, what is the primary purpose of the soak time between cycles?

Accepted Answer

To allow water to infiltrate into the soil and prevent runoff

Answer

To allow the pump to cool down

Answer

To reduce water pressure in the mainline

Answer

To let the controller reset between programs

Question 6

A two-wire decoder irrigation control system differs from a conventional multi-wire system in that it:

Accepted Answer

Uses only two wires to communicate with and power all field decoders and valves

Answer

Requires a separate wire pair for each zone valve

Answer

Cannot accommodate more than 12 zones

Answer

Does not require a grounding connection