Discussion
Assertion (A): Turbine inlet temperature is measured directly by a probe in the combustor outlet.
Reason (R): That location is the hottest point in the gas path.
Select the correct answer from the options below.
Answer: D
Correct answer: A is false but R is true
The reason is correct: the combustor outlet is the hottest station in the gas path, and turbine inlet temperature is the parameter that genuinely limits the engine.
That is precisely why the assertion fails. Gas there is hotter than any practical probe would survive for long, so the temperature is inferred rather than measured: a thermocouple is placed further downstream, at the exhaust or between turbine stages, and the relationship to inlet temperature established during development. The cockpit therefore shows exhaust or turbine gas temperature, with limits set against the hotter station it represents.
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