Which one of the following is a characteristic of a venturi flow device?
A. Develops an output signal by measuring the differential pressure of the fluid as it passes through the device.
B. Can measure the rate of flow of incompressible fluids, but not of compressible fluids.
C. Develops an output signal by measuring the velocity of the fluid as it passes through the device.
D. Produces a head loss that is greater than the head loss produced by an orifice.
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ANSWER: A