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Instrumentationeasy#401

The airspeed indicator (ASI) measures the difference between:

A

Pitot (total) pressure and static pressure

Correct
B

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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