5 Questions
Which symbol is used to represent pressure?
P
What is gauge pressure?
Pressure relative to the ambient pressure
Which unit is used to express pressure in the SI system?
Pascal (Pa)
What is the traditional unit of pressure in the imperial and US customary systems?
Pound-force per square inch (psi)
Which units are used to express pressures in terms of the height of a column of fluid in a manometer?
Centimeter of water, millimeter of mercury, and inch of mercury
Study Notes
Pressure Representation
- The symbol "p" or "P" is used to represent pressure.
Pressure Types
- Gauge pressure is the difference between the absolute pressure and atmospheric pressure.
Units of Pressure
- In the SI system, the unit of pressure is the pascal (Pa).
- In the imperial and US customary systems, the traditional unit of pressure is the pound per square inch (psi).
Manometer Units
- The units used to express pressures in terms of the height of a column of fluid in a manometer are inches of water (inH2O) and millimeters of mercury (mmHg).
Test your knowledge on pressure and gauge pressure with this quiz! Learn about the different units used to express pressure, including the SI unit pascal (Pa). Discover the relationship between force, area, and pressure.
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