Which granular application device uses a spinning plate to distribute a wider swath than its own width?

Which granular application device uses a spinning plate to distribute a wider swath than its own width?

• A. Rotary spreader
• B. Drop spreader
• C. Shaker can
• D. Handheld sprayer

Answer: (A)

Granular application devices that rely on centrifugal action can fling particles outward from a spinning dispersal plate, creating a spread wider than the machine itself. The rotary spreader uses a hopper feeding granules to a rotating plate at the bottom. As the plate spins, particles are thrown outward, producing a broad, fan-like swath that extends beyond the unit’s width. The swath width and application rate depend on plate speed, gate opening, and the vehicle’s speed, so you can calibrate for even coverage. In contrast, a drop spreader releases material straight down through a chute with no spinning plate, giving a narrow, linear distribution. A shaker can is a hand tool that simply shakes granules out without creating a wide patterned throw. A handheld sprayer applies liquids rather than granular material, so its pattern differs and isn’t driven by a spinning plate.

Granular application devices that rely on centrifugal action can fling particles outward from a spinning dispersal plate, creating a spread wider than the machine itself. The rotary spreader uses a hopper feeding granules to a rotating plate at the bottom. As the plate spins, particles are thrown outward, producing a broad, fan-like swath that extends beyond the unit’s width. The swath width and application rate depend on plate speed, gate opening, and the vehicle’s speed, so you can calibrate for even coverage.

In contrast, a drop spreader releases material straight down through a chute with no spinning plate, giving a narrow, linear distribution. A shaker can is a hand tool that simply shakes granules out without creating a wide patterned throw. A handheld sprayer applies liquids rather than granular material, so its pattern differs and isn’t driven by a spinning plate.