What critical component is tested by performing a 'bump test' on a generator during a data center's emergency preparedness drill?

Performing a 'bump test' on a generator during a data center's emergency preparedness drill primarily tests the automatic transfer switch (ATS) and the generator's ability to quickly and reliably assume the load. The bump test simulates a power outage by briefly disconnecting the data center from the utility power and allowing the generator to start a....