🔍 Key Concepts

• Turbo-electric drive systems and how the turbine and generator are connected • Difference between normal speed control and emergency securing of a turbine • How steam supply isolation compares to control at the throttle or generator

💭 Think About

• In an emergency, do you want to control speed gently, or positively shut off the driving energy? • Which device or valve is closest to the actual steam source and provides the most definite way to secure the turbine? • Which option affects only the electrical side, and which options directly affect the steam driving the turbine?

✅ Before You Answer

• Identify which choice gives a positive, secure isolation of steam to the turbine, not just speed reduction • Determine which action is normally used for routine maneuvering, versus a true securing or emergency stop • Consider plant safety procedures: where are you trained to isolate energy when securing rotating machinery?