FAA AMT Airframe Test 2025 – 400 Free Practice Questions to Pass the Exam

When dc generators are operated in parallel to supply power for a single load, the equalizer circuit operates by increasing the output of the low generator and decreasing the output of the high generator until they are equal. This ensures that the generators share the load proportionally, preventing one generator from working harder than another, which could lead to uneven wear and potential issues in the system.

Options A, B, and D are incorrect:

A. Switching the generators off and on: This action is not related to the equalizer circuit's function in ensuring balanced load sharing between the generators.

B. Reducing the input voltage: This action would not help in balancing the load between the generators when operating in parallel.

D. Isolating the malfunctioning generator: While isolating a malfunctioning generator may be necessary, it is not the function of the equalizer circuit when generators are operating in parallel.