The electrostatic vent fog precipitator removes oil mist from which of the following areas?

Correct Answer: Option B — Main Reduction Gear

The electrostatic vent fog precipitator is specifically designed to remove oil mist from the main reduction gear (MRG) sump vents. By ionizing the oil particles, the precipitator collects them on charged plates, preventing the discharge of oil mist into the machinery space and maintaining a clean environment.