What is the conversion method of the torque converter for stackers with torque converters if the load changes?

The conversion method of the torque converter in stackers relies on the relationship between torque and rotation speed, particularly as load conditions change. When dealing with various load scenarios, a low torque situation can lead to high rotation speeds. This is because the torque converter is designed to adjust the engine's characteristics based on load demands. In cases where less load is present, the system can allow for increased speed without requiring proportional increases in torque. Conversely, when high torque is needed, often due to an increased load, the system typically operates at a lower rotation speed to produce that higher torque efficiently.

This fundamental principle explains why the selected answer accurately reflects the behavior of torque converters in stackers. It highlights how torque and rotation interact dynamically in response to changing load conditions, maintaining operational efficiency and effectiveness in handling different situations. The other options do not capture this critical relationship between load, torque, and rotation speed accurately.