Exam 100% Accurate!
spray heads - ANSWERwhat has the highest precipitation rate
triangular head spacing - ANSWERwhich head spacing would provide the highest precipitation rate
for any given property
exceeds the infiltration rate in most tight soils - ANSWERprecipitation rates from most spray heads
exceed the infiltration rate of most tight soils or loose rocky soil
clay - ANSWERwhich soil type would hold the most water loose rock, loam, sand, or clay
all of these - ANSWERwhich of the following would affect the precipitation rate of a rotary head
erratic head spacing, nozzle size, or head pressure?
increases - ANSWERwith most rotary heads, if you adjust the arc down ( for instance, from 360 to
180) the precipitation_________.
remains the same - ANSWERwith most rotary heads if you adjust the arc down the discharge
rate_________.
false - ANSWERtrue or false. rotary heads precipitate water more rapidly than any other types of
heads.
to apply water equal or slightly below infiltration rate of the soil - ANSWERhow should irrigation
heads be selected
a shallow root system - ANSWERfrequent watering will result in
drip - ANSWERwhich type of system ( heads..) is not ideal for dissolving surface fertilizer?
filters - ANSWERwhat is essential to prevent emitter from clogging?
precipitation rates vary - ANSWERwhy is it never acceptable to run drip lines and spray heads on the
same zone valves
ideal conditions for his or her area - ANSWERthe licensed irrigator should base his or hers design on
what factor
mainline - ANSWERwhich piping of a sprinkler system will be under constant pressure
less - ANSWERa gate valve will have more or less pressure loss than a globe valve of equal size?
true - ANSWERtrue or false the lower the c value the greater the friction less
precipitation rate - ANSWERwhat is the main design factor that affects the effectiveness of a
irrigation system
circular - ANSWERconvential spray heads discharge a spray pattern that is usually ________ in shape.
true - ANSWERtrue or false polyethelyne tubing is resistant to uv lighting