Landscape Design Irrigation and Water Management

Question 1

What type of irrigation system delivers water directly to the root zone to minimize evaporation and overspray?

Accepted Answer

Drip irrigation

Answer

Spray head system

Answer

Rotor system

Answer

Flood irrigation

Question 2

What is a backflow preventer in an irrigation system?

Accepted Answer

Device that prevents irrigation water from flowing back into the potable water supply

Answer

Valve that stops water if a sprinkler breaks

Answer

Timer that shuts off the system automatically

Answer

Filter that removes sediment from water

Question 3

Which irrigation head type is best suited for large turf areas due to its long throw radius?

Accepted Answer

Rotor head

Answer

Pop-up spray head

Answer

Drip emitter

Answer

Micro-spray

Question 4

What does precipitation rate mean in the context of irrigation design?

Accepted Answer

The rate at which water is applied to the landscape in inches per hour

Answer

The amount of rainfall recorded in a season

Answer

The water pressure at the sprinkler head

Answer

The frequency of irrigation cycles

Question 5

What is the matched precipitation rate (MPR) principle in irrigation design?

Accepted Answer

All heads in a zone deliver the same precipitation rate regardless of arc

Answer

Matching irrigation output to rainfall amounts

Answer

Setting rotor and spray heads in the same zone

Answer

Adjusting pressure to match flow requirements

Question 6

What US organization offers the Certified Irrigation Designer (CID) credential?

Accepted Answer

Irrigation Association

Answer

EPA WaterSense Program

Answer

NALP

Answer

ASLA