wpi-wastewater-collection-operator-class-3 Practice Test

1Single Choice

When hydraulically cleaning a sewer main, what is the primary reason for selecting a hydraulic nozzle with the appropriate nozzle angle (such as 5??, 15??, or 30??)?

A.The angle determines the hose diameter required for the cleaning operation.
B.The angle controls the volume of water delivered by the nozzle.
C.The angle affects the spray pattern and force applied to the pipe wall for removing deposits.
D.The angle determines whether the nozzle can be connected to a jetter or a vactor truck.

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