Question 12Gas Turbine - Assistant Engineer

The correct answer is D) All of the above. Magnetic pickups on the GE LM2500 gas turbine engine are used to determine the speed of both the gas generator and the power turbine. This information is then used to calculate the engine's torque output. The magnetic pickups send speed signals to the engine control system, which uses this data to monitor and manage the engine's performance. The other answer choices are incorrect because they only address one or two of the three key functions that the magnetic pickups serve on the LM2500 engine. The magnetic pickups provide the necessary speed information for the complete monitoring and control of the gas turbine engine.