Pump capacity is rated in all of the following terms EXCEPT?

Pump capacity is specifically measured and rated in terms that quantify the volume of fluid that a pump can move or transfer over a specified period. Commonly used units such as gallons per minute, cubic feet per minute, and liters per second all relate to the flow rate and describe how much fluid the pump can handle in a given timeframe.

Pounds per square inch, on the other hand, is a measure of pressure, not flow rate. It indicates the amount of force exerted per unit area but does not reflect the volume of fluid being pumped. Therefore, while pressure is an essential aspect of hydraulics and pumps, it does not pertain to the capacity or flow rate of a pump, which is why it is the only term not associated with pump capacity.

Understanding the distinction between pressure and flow rate is crucial in hydraulics. While pressure affects how the fluid is moved and can influence the performance of the pump, it does not provide a measure of the volume of fluid being pumped, which is central to assessing pump capacity.