On the GE LM2500 gas turbine engine,...

Question 1 / 2707066636eed28f7522a1c51e0cf

Question 1 of 2707066636eed28f7522a1c51e0cf

On the GE LM2500 gas turbine engine, magnetic pickups are utilized for what purpose?

Question 1 of 27070

On the GE LM2500 gas turbine engine, magnetic pickups are utilized for what purpose?

🔍 Key Concepts

• Role of magnetic pickups in rotating machinery • Difference between gas generator speed and power turbine speed in a split‑shaft gas turbine like the LM2500 • Typical inputs needed to calculate engine torque on marine gas turbines

💭 Think About

• On an LM2500, which rotating components would produce a measurable tooth or notch signal that a magnetic pickup can read? • Is torque usually measured directly by magnetic pickups, or is it typically derived from other kinds of sensors or strain measurements? • Do magnetic pickups sense rotational speed, load, temperature, or pressure?

✅ Before You Answer

• Confirm that magnetic pickups sense passing teeth/notches to produce a frequency signal proportional to rpm. • Distinguish clearly between gas generator (N1/Ngg) speed and power turbine (N2/Npt) speed sensing on the LM2500 layout. • Verify whether torque on this engine type is obtained from magnetic pickups or from other torque‑measuring arrangements.

Question 1 of 27070

On the GE LM2500 gas turbine engine, magnetic pickups are utilized for what purpose?

Determining gas generator speed.

Calculating engine torque.

Determining power turbine speed.

All of the above.

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