Final answer:
The sentence refers to the activation of a control system's components when a specific pressure drop is detected in a pneumatic or hydraulic system, which would depend on the specific operational parameters of the system.
Step-by-step explanation:
The statement 'BOTH ACCELERATOR AND EXHAUSTER ARE ACTIVATED WHEN A DROP OF _______ PSI IS DETECTED IN THE SYSTEM' seems to describe a condition in a pneumatic or hydraulic system where pressure-related control mechanisms are triggered due to a specific change in pressure. Generally, an accelerator may refer to a component that increases fluid flow, and an exhauster deals with the removal or reduction of pressure or fluid. In many automated control systems, such as in industrial machinery or vehicles, it is common to have a set point that activates certain responses to maintain system stability. The missing PSI (pounds per square inch) value is likely to be dependent on the specific system design and the sensitivity it requires. In practice, the exact value would be determined by the system's operational parameters and safety requirements.