To reduce radio interference, how should a capacitor be connected to the generator?

Connecting a capacitor in parallel with the generator is an effective method to reduce radio interference. When a capacitor is placed in parallel, it acts as a shunt filter, bypassing high-frequency noise and allowing it to flow to ground instead of reaching the radio equipment. This configuration helps to smooth out voltage fluctuations and filter out unwanted signals, thereby improving the quality of the electrical output and preventing interference with radio communications.

In contrast, other connection methods are less effective for interference reduction. For instance, a series connection would not provide the same filtering effect because the capacitor would interfere with the flow of current, limiting its ability to stabilize voltage and filter out noise. Similarly, a series/parallel configuration may complicate the pathway for noise, making it harder to predict and manage interference. Directly connecting the capacitor would not create the necessary bypass effect that helps mitigate high-frequency noise. Therefore, a parallel connection is the best choice for ensuring improved performance and reduced radio interference in an aircraft's electrical system.