Question

Device in which the pressure drop is constant and the area through which the fluid varies with flow rate is

• A. Area meters
• B. Turbine meters
• C. Orifice meters
• D. Nozzle meters

Hint:

Area meters are simple devices for visual flow measurement using variable area.

Answer 1

The Correct Option is A

In area meters (like rotameter), pressure drop is constant while the area changes with flow rate.
The float position gives a direct reading of the flow.