What is a current limiter used for?

• A. increases generator speed
• B. limits current, prevents overloading of a DC generator (if current is excessive)
• C. stores energy
• D. reduces voltage drop across the line

Answer: (B)

A current limiter protects the electrical system by keeping the current drawn within a safe maximum. When a load tries to pull more current than the generator and wiring can safely handle, the limiter reduces the generator’s output to prevent overheating, insulation damage, or tripping protective devices. This is why it’s used—to prevent overloading of a DC generator and the associated wiring. It doesn’t increase generator speed, it doesn’t store energy, and while reducing current can lessen voltage drop along the line, that isn’t its primary purpose.