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The pressure measured relative to vacuum is ______

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in Aerodynamics by (773k points)
The pressure measured relative to vacuum is ______

(a) total pressure

(b) static pressure

(c) dynamic pressure

(d) absolute pressure

I got this question in homework.

My doubt stems from Pitot Tube in portion Inviscid & Incompressible Flow of Aerodynamics

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Correct answer is (d) absolute pressure

The best I can explain: Absolute pressure is measured with respect to vacuum. A vacuum has an absolute pressure of 0 psi. It is also defined as the sum of gauge pressure and atmospheric pressure.

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