🔍 Key Concepts

• Condensation and how moisture forms on cooler surfaces compared to surrounding air • Effect of dew point on electrical insulation in generator windings • Which generator parts (rotor, stator, bearings, lube oil) are most vulnerable to moisture damage or short circuits

💭 Think About

• Think about what happens inside a large generator when it is stopped and cools down relative to the machinery space air • Which component would be most critical to keep dry to avoid electrical faults: windings, bearings, lube oil, or machine casing? • Ask yourself: is the main concern temperature comfort, lubrication quality, or electrical insulation integrity?

✅ Before You Answer

• Verify which part of a generator has electrical insulation that can be damaged by moisture • Consider what happens when metal and insulation surfaces are colder than the surrounding air that contains moisture • Check which choice clearly connects dew point / condensation with the component that must stay dry for safe generator operation