Instrumentationeasy#401
The airspeed indicator (ASI) measures the difference between:
A
Pitot (total) pressure and static pressure
CorrectB
Static pressure and ambient temperature
C
Dynamic pressure and temperature
D
Cabin pressure and static pressure
Explanation
The ASI displays the difference between pitot (total) pressure and static pressure, which equals dynamic pressure (q = ½ρV²).
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