On the gas turbine engine shown in the illustration, the "T5.4" thermocouples are _________. Illustration GT-0006

Correct Answer: Option C — electronically connected in parallel, producing a single temperature signal from each of four harnesses

Thermocouples in these gas turbine systems are wired in parallel to provide an average temperature reading across the turbine inlet or outlet. By grouping them into four distinct harnesses, the control system receives a reliable, averaged signal that prevents a single faulty sensor from causing an erroneous engine shutdown.