SACAA CPL Instruments Practice Questions - SACAA Commercial Pilot Licence (Aeroplane) Instruments & Electronics Examination Exam

An altimeter measures height above a selected pressure datum based on which physical law or principle?

Rate of change of static pressure with speed Lapse rate of atmospheric static pressure with increasing altitude Differential dynamic pressure between upper and lower wing surfaces Electromagnetic wave reflection from the Earth surface

Correct Answer:

Lapse rate of atmospheric static pressure with increasing altitude

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