Fluid clutches are used on equipment that is subjected to?

Fluid clutches are particularly well-suited for applications that involve continuous running. This is because they are designed to provide smooth and gradual engagement of power transmission, which helps in reducing wear and tear on components. When equipment operates continuously, such as in machinery that performs prolonged tasks without stopping, fluid clutches can manage thermal buildup and maintain consistent performance.

These types of clutches can absorb and dampen vibrations, making them ideal for scenarios where a steady flow of power is needed over time. They allow for a gradual transfer of torque, which helps in maintaining smooth operation without sudden jolts that could lead to mechanical failure.

In contrast, the other options describe situations that can put more strain or require different mechanisms for effective power transmission. Shock loading refers to abrupt increases in load, misalignment can lead to additional stress on components, and frequent stopping may not take advantage of the strengths of fluid clutches, as they excel in maintaining power fluidity rather than dealing with stop-and-start scenarios.