Which parameter does an EGT system indicate?

Which parameter does an EGT system indicate?

• A. Ambient temperature
• B. Exhaust gas temperature
• C. Engine oil temperature
• D. Cabin pressure

Answer: (B)

Exhaust Gas Temperature is the parameter monitored by the EGT system. In a gas turbine engine, sensors placed in the exhaust stream measure the temperature of the hot gases as they leave the combustor and turbine area. This temperature reflects the thermal load the engine is experiencing and how efficiently the combustor is burning fuel, giving a direct indication of turbine inlet temperature and overall combustor health. The EGT reading is used to guard against overheating by altering fuel flow or triggering protective limits if the temperature climbs too high. Ambient temperature, engine oil temperature, and cabin pressure are governed by different systems and are not what the EGT sensors measure. Ambient temperature is the surrounding air temperature, engine oil temperature relates to the lubrication system, and cabin pressure concerns the pressure inside the aircraft cabin.

Exhaust Gas Temperature is the parameter monitored by the EGT system. In a gas turbine engine, sensors placed in the exhaust stream measure the temperature of the hot gases as they leave the combustor and turbine area. This temperature reflects the thermal load the engine is experiencing and how efficiently the combustor is burning fuel, giving a direct indication of turbine inlet temperature and overall combustor health. The EGT reading is used to guard against overheating by altering fuel flow or triggering protective limits if the temperature climbs too high.

Ambient temperature, engine oil temperature, and cabin pressure are governed by different systems and are not what the EGT sensors measure. Ambient temperature is the surrounding air temperature, engine oil temperature relates to the lubrication system, and cabin pressure concerns the pressure inside the aircraft cabin.