Why are isolation transformers used in avionics power supplies, and what benefits do they provide?

Why are isolation transformers used in avionics power supplies, and what benefits do they provide?

• A. They provide galvanic isolation and fault/noise protection and allow different reference grounds without sharing return currents.
• B. They increase current capacity without changing voltage.
• C. They convert DC to DC and store energy in a core.
• D. They are primarily used to reduce EMI without isolation.

Answer: (A)