The sensors which transmit remote system temperatures on marine gas turbines are usually constructed as __________.

Correct Answer: Option C — RTD's

Resistance Temperature Detectors (RTDs) are the industry standard for monitoring critical gas turbine temperatures. They offer high accuracy, excellent linearity, and long-term stability compared to thermocouples. Their electrical resistance changes predictably with temperature, allowing for precise remote monitoring and integration into automated engine control and safety systems.