Which button do you press to automatically sync the BPU?

The Auto/parallel mode button is the correct choice for automatically syncing the Bus Processing Unit (BPU) because it is specifically designed to engage the system in synchronization with other electrical sources while also managing the parallel operation of generators or power sources. When this button is activated, it allows the generator’s output to align with frequency, voltage, and phase to ensure a smooth integration into the power system.

This button serves a critical function in power production as it facilitates seamless transitions and operations, reducing the risk of disturbances or outages that can occur during synchronization processes. In contrast, the other options are not explicitly tailored for the automatic synchronization process as this button is, which is primarily the key feature of the Auto/parallel mode button. Other buttons may perform different functions related to monitoring or operational settings but do not directly pertain to the automatic syncing process as clearly.