The nozzle reaction can be reduced by increasing what?

Increasing the nozzle size reduces the nozzle reaction because it allows a greater volume of water to flow through the nozzle at a lower velocity. The nozzle reaction is the force created by the water being expelled from the nozzle, and it is dependent on both the flow rate and the velocity of the water. By enlarging the nozzle, the discharge area increases, which means the water can exit more freely and with less resistance, thus lowering the reaction force felt by the operator holding the nozzle.

In contrast, increasing water flow or pressure at the nozzle would increase the nozzle reaction, as both of these factors contribute to a more forceful discharge of water. Additionally, increasing the hose diameter does not directly affect the force exerted by the nozzle but rather impacts the volume and pressure of water that can be delivered through the system. Therefore, the effective strategy for reducing nozzle reaction is through increasing the nozzle size.