Pounds Per Square Inch Flashcards, test questions and answers

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What is Pounds Per Square Inch?

Pounds per square inch (psi) is a unit of measurement used to measure pressure. It is commonly used in engineering and the sciences, and it is derived from the Pascal unit system. It can also be defined as one pound-force applied over an area of one square inch. Psi values are often used to measure various types of pressure, including hydraulic and pneumatic pressures. Hydraulic pressure is created when a liquid or gas is forced through a pipe or other vessel, while pneumatic pressure refers to air or some other gas being forced through the same kind of vessel. Psi values are also used for measuring the strength required for objects to support certain amounts of weight or stress. In addition to engineering and scientific applications, psi values are also used in everyday life for measuring tire pressures, water pump pressures, fuel pump pressures, and many other uses. In most cases, psi represents gauge pressure which is measured relative to atmospheric pressure rather than absolute pressure which measures against vacuum conditions. It’s important to remember that gauge readings may not always accurately reflect true levels since atmospheric conditions can affect them greatly; therefore it’s always best practice to consult with a professional who understands these phenomena when dealing with any applications where precise measurements are necessary.