What is the difference between gauge pressure and differential pressure?
A. Gauge pressure is the pressure measured relative to atmospheric pressure, while differential pressure is the difference between two pressures.
B. Gauge pressure is used for liquids, while differential pressure is used for gases.
C. Gauge pressure is typically measured in units of pascals (Pa), while differential pressure is typically measured in units of pounds per square inch (psi).
D. Gauge pressure is always positive, while differential pressure can be positive or negative.
Answer:A
What is the difference between gauge pressure and differential pressure?
A. Gauge pressure is the pressure measured relative to atmospheric pressure, while differential pressure is the difference between two pressures. B. Gauge pressure is used for liquids, while differential pressure is used for gases. C. Gauge pressure is typically measured in units of pascals (Pa), while differential pressure is typically measured in units of pounds per square inch (psi). D. Gauge pressure is always positive, while differential pressure can be positive or negative.
Explanation: Gauge pressure is the pressure measured relative to atmospheric pressure, while differential pressure is the difference between two pressures. Differential pressure is commonly used in flow measurement applications, where the pressure difference across a flow meter is used to calculate the flow rate of a fluid. Gauge pressure and differential pressure can both be positive or negative, depending on the pressure being measured and the reference pressure used.