🔍 Key Concepts

• How a shunt field rheostat affects generator output voltage and current • Relationship between field current and generated voltage in a DC generator • What happens to field strength when resistance in the field circuit is changed

💭 Think About

• Think about whether you want more or less field current to get higher generator output • If you add resistance in series with the field, does current in the field winding go up or down? What does that do to the magnetic field? • For a machine already running normally, which choices are realistic operational adjustments versus extreme or impractical actions?

✅ Before You Answer

• Identify whether increasing field resistance makes the field current stronger or weaker • Decide if a stronger magnetic field produces higher or lower output voltage in a DC generator • Eliminate any options that would obviously reduce field strength or are not standard operating practice, like full shutdown for minor adjustments