Discussion
The discharge from a sprinkler nozzle depends on
Answer: A
The discharge depends on operating pressure and nozzle geometry.
A sprinkler nozzle behaves like an orifice: \(q = C_{d}A\sqrt{2gh}\), where the area and discharge coefficient come from the nozzle's size and shape and \(h\) is the operating pressure head. So the flow rate is fixed by pressure and nozzle geometry.
The distribution pattern and application rate are results of the discharge, the spacing and the sprinkler's motion, not causes of the discharge. Nozzle angle affects the throw distance, not the flow rate.
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