In the operation of a marine propulsion gas...

Question 1 of 31048fy_heal_CREATE_q606_2022

In the operation of a marine propulsion gas turbine, kinetic and thermal energy required to drive the main propeller shaft are extracted by the _________.

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Question 1 of 31048

In the operation of a marine propulsion gas turbine, kinetic and thermal energy required to drive the main propeller shaft are extracted by the _________.

🔍 Key Concepts

• Basic layout of a marine gas turbine (air intake → compressor → combustor → turbine → exhaust) • The difference between compressor stages and turbine stages in terms of energy flow • Which component is mechanically connected to the propeller shaft / reduction gear to produce useful work

💭 Think About

• Trace the path of the working fluid (air/gas) through the engine and ask: at what point is energy converted into shaft rotation for the ship? • Consider which component’s primary job is to add energy to the air, and which component’s job is to take energy out of the hot gas to do useful work. • Eliminate any choices that mainly control or guide flow, rather than directly extracting energy to turn the shaft.

✅ Before You Answer

• Identify which component is downstream of the combustor and is responsible for driving the load (propeller) • Verify which listed components are rotating machinery versus control/flow-management devices • Confirm which component’s output is mechanical shaft power rather than only changing pressure, temperature, or direction of flow.