🔍 Key Concepts
• Study the floating member shown between the pinion flange and turbine flange and think about what kind of movement it is meant to accommodate (axial vs angular misalignment).
• Notice the presence of oil inlets, shaft rings, and oil outlet and relate that to the type of high‑speed, heavily loaded service this coupling is designed for.
• Think about a double‑reduction turbine gear train and where a floating, lubricated coupling would normally be installed in relation to the turbine, high‑speed pinion, first reduction gear, and second reduction gear.
💭 Think About
• Looking at the labels (pinion flange, turbine flange, floating member), which two components of the gear train is this coupling directly connecting?
• Does the detailed oil lubrication system and floating design suggest light, small‑auxiliary duty or main propulsion/high‑speed gear‑train duty?
• Would a coupling like this be designed to take unlimited misalignment, or only small, controlled amounts with very accurate alignment required? How does that affect the truth of the statements given?
✅ Before You Answer
• Verify which parts are actually named in the figure: pinion flange, turbine flange, and floating member and match them to the answer choices.
• Check whether any option claims it can handle any misalignment; consider if that is realistic for precision turbine gearing.
• Decide if the construction and size shown look like something used only on small auxiliaries or on main‑propulsion reduction gearing.