Velocity pressure in a duct is best described as:

Velocity pressure in a duct is best

Multiple choice — select the best answer

AThe pressure loss caused by duct friction
BThe static pressure measured at the fan outlet
CThe difference between total pressure and dynamic pressure
DThe pressure component due to the kinetic energy of moving air

✓ Correct answer: D. The pressure component due to the kinetic energy of moving air Velocity pressure (VP) results from the kinetic energy of air in motion. It acts only in the direction of airflow and equals (V/4005)² in. w.c., where V is velocity in FPM at standard air density.

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Topic: Airflow & Ductwork

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Velocity pressure in a duct is best described as:

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