Zero reference for the GE LM2500 gas turbine...

Question 1 of 270705eccef9fbacbc34ba4d46bd4

Zero reference for the GE LM2500 gas turbine engine is established by the use of which of the following engine components?

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Question 1 of 27070

Zero reference for the GE LM2500 gas turbine engine is established by the use of which of the following engine components?

🔍 Key Concepts

• How a zero reference is established on rotating machinery like gas turbines • The difference between stationary components (vanes/shrouds) and rotating components (blades, blade pads, locking lugs) in the LM2500 • Which component is designed as a precise, hard reference surface for measurements and clearances

💭 Think About

• Ask yourself: When mechanics set up dial indicators or clearance tools on an LM2500, which part do they actually touch to establish zero on the rotor? • Think about which of these components is specifically designed and manufactured as a measurement/locating feature, not just an airfoil or structural lock. • Consider whether zero reference is more likely taken from a wear‑prone gas path surface or from a hardened, dedicated reference pad/feature.

✅ Before You Answer

• Identify which option represents a hardened, machined reference surface rather than a gas path airfoil or simple locking feature. • Make sure you distinguish between vanes (stationary airfoils) and blades (rotating airfoils) and which would reasonably be used for accurate measurements. • Verify from your LM2500 study material which specific feature is called out as the rotor zero reference for setting clearances and alignment.