What occurs when stepping on the brake while driving an automatic gearshift stacker?

When stepping on the brake while driving an automatic gearshift stacker, the tires generate braking resistance, which is critical for slowing down or stopping the vehicle. The braking system converts kinetic energy into heat through friction, allowing the stacker to decelerate effectively. In an automatic vehicle, pressing the brake pedal engages the braking system, which applies force to the tires, creating the necessary resistance to bring the vehicle to a halt.

This action is fundamental for safe operation, particularly in environments where precision handling is required, such as warehouses or loading docks. Understanding how the brake mechanism works is crucial for operators, as it ensures they can control the stacker effectively and maintain safety standards while performing tasks.

The other options do not accurately represent what happens when the brake is engaged. For example, engine power does not increase when the brake is applied; instead, the engine may momentarily remain at idle. Brake fluid pressure typically increases, not decreases, as the hydraulic system engages the brakes. Lastly, fuel consumption is likely to decrease rather than increase because engaging the brake reduces the need for acceleration, thereby lowering fuel usage.