FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

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Turbine engine exhaust gas temperatures are measured by using

  1. Copper / iron thermocouples.

  2. Platinum / rhodium thermocouples.

  3. Chromel / alumel thermocouples.

  4. Nickel / cobalt thermocouples.

The correct answer is: Chromel / alumel thermocouples.

Turbine engine exhaust gas temperatures are typically measured using Chromel / Alumel thermocouples. These thermocouples are specifically designed for high-temperature applications and can withstand the extreme conditions present in the exhaust system of a turbine engine. Chromel / Alumel thermocouples have a wide temperature range and are known for their accuracy and reliability in measuring high temperatures. Options A, B, and D are incorrect because they do not have the same temperature resistance and reliability characteristics as Chromel / Alumel thermocouples when it comes to measuring turbine engine exhaust gas temperatures.

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