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

Correct Answer: Option D — All of the above.

Magnetic pickups on the LM2500 generate electrical pulses as gear teeth pass the sensor. These signals are processed by the control system to accurately measure the rotational speeds of the gas generator and power turbine, which are then used to calculate torque and manage engine operation and safety parameters.