Brunei DCA CPL(A) Instrumentation Practice Questions - Brunei DCA CPL(A) Theoretical Knowledge - Aircraft General Knowledge Instrumentation Exam

What is the primary operating principle of an aneroid altimeter in an aircraft pitot-static system?

It measures dynamic pressure changes relative to total pressure It measures ambient static atmospheric pressure using an evacuated sealed capsule It calculates altitude by comparing pitot impact pressure against cabin pressure It senses temperature lapse rates to determine geometric altitude

Correct Answer:

It measures ambient static atmospheric pressure using an evacuated sealed capsule

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