🔍 Key Concepts

• Hydraulic governor operation and purpose of the compensating (needle) valve • Difference between no‑load, part‑load, and full‑load conditions when adjusting speed‑control devices • Why stability and hunting of the governor depend on how the engine is loaded during adjustment

💭 Think About

• Under what load and temperature condition will the governor’s behavior most closely represent the engine’s real‑world operating condition? • If you adjust the compensating needle with the engine lightly loaded or unloaded, how might the governor behave differently once full load is applied? • Which choice best represents a stable, normal service condition rather than an artificial test condition?

✅ Before You Answer

• Be clear on the meaning of maximum power, normal load, and no load and how each affects governor response. • Consider that a compensating needle valve is used to control speed stability and reduce hunting—in which condition is hunting most critical? • Verify which option describes the condition the engine will see most of the time in service, not just during warm‑up or testing.