A Venturi Tube May Be Used as the Inlet to an Automobile

question 25

Multiple Choice

A venturi tube may be used as the inlet to an automobile carburetor. If the 2.0-cm diameter pipe narrows to a 1.0-cm diameter, what is the pressure drop in the constricted section for an airflow of 3.0 m/s in the 2.0-cm section? (ρ = 1.2 kg/m³.)

• A) 70 Pa
• B) 85 Pa
• C) 100 Pa
• D) 120 Pa
• E) 81 Pa

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