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Fluid Mechanics: Pressure MCQ

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PressureMediumQuestion 30908

Question

A U-tube manometer measures gauge pressure. Gauge pressure is:
  1. A
    Absolute pressure
  2. B
    Absolute pressure minus atmospheric pressure
    Correct
  3. C
    Atmospheric pressure minus absolute pressure
  4. D
    Vapour pressure

Correct answer

Absolute pressure minus atmospheric pressure

Explanation

Gauge pressure = Absolute pressure − Atmospheric pressure. Negative gauge = vacuum.

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