What adjustment should be made for the Sentinel generator after starting it?

The correct adjustment for the Sentinel generator after starting it is to set it for 208 volts and 400 Hz. This specification is crucial because the Sentinel generator is designed to power specific air defense systems and equipment that require this voltage and frequency for optimal operation.

Setting the generator to 208 volts ensures that the electrical equipment receives the appropriate power load without the risk of overvoltage, which can damage sensitive systems. Operating at a frequency of 400 Hz is also important, as it aligns with the operational requirements of airborne and defense systems that typically benefit from higher frequency supply, thus allowing for lighter and more compact power components.

If the generator were adjusted to a different voltage or frequency, such as 220 volts or 240 volts, it may not meet the specifications required by the equipment being powered, potentially leading to malfunction or reduced efficiency. Similarly, a frequency of 60 Hz would not be compatible with devices designed for 400 Hz operation, which could result in operational failures. Therefore, the adjustment to 208 volts and 400 Hz is essential for maintaining proper functionality of the connected systems.