How is the axial clearance indicator used on...

How is the axial clearance indicator used on a turbine?

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🔍 Key Concepts

• Axial clearance in marine steam or gas turbines (what it is and why it matters) • Where the axial clearance indicator must physically touch (rotor, boss, bearing, or bridge) to give a meaningful measurement • Difference between directly reading a clearance vs. using shims or separate gauges to obtain that clearance

💭 Think About

• Which option describes taking a measurement directly from the indicator after bringing it into contact with the rotor or a fixed reference? • Which choices introduce extra tools (like shims or a bridge gauge) that sound more like indirect methods or different types of measurements? • Think about how engineers normally measure a small end‑play or axial movement on rotating machinery: do they stack shims, span across bearings, or read motion on a small calibrated arm or plunger?

✅ Before You Answer

• Identify which option clearly has the indicator’s sensing arm or contact point touching the end of the rotor or a fixed reference surface. • Check whether the method described allows you to read the clearance directly on a graduated scale without additional measuring steps. • Eliminate any choices that mostly describe using other tools (bridge gauges, depth‑gauge wells, shims) as the main measuring device instead of the axial clearance indicator itself.

🔍 Key Concepts

💭 Think About

✅ Before You Answer