Which boomless spraying device uses a group of straight stream tips that resembles fingers and oscillates?

Which boomless spraying device uses a group of straight stream tips that resembles fingers and oscillates?

• A. Directa-Spra
• B. CDA
• C. Radiarc
• D. Backpack sprayer

Answer: (C)

The concept being tested is recognizing a boomless sprayer design that uses a cluster of straight-stream tips arranged like fingers and that sweeps or oscillates to cover the target area. This finger-like arrangement with oscillation is a hallmark of Radiarc’s boomless sprayer. It places multiple straight-stream nozzles around a central hub and uses an oscillating mechanism to sweep the spray across along roadsides or right-of-ways, delivering controlled coverage without a traditional boom. The other options don’t describe this fingered, oscillating pattern: some are different boomless configurations, and a backpack sprayer is handheld rather than a boomless, oscillating device.