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Questions and Answers
What is the SI unit of pressure?
What is the SI unit of pressure?
- Pound-force per square inch (psi)
- Atmosphere (atm)
- Torr
- Pascal (Pa) (correct)
What is gauge pressure?
What is gauge pressure?
- Pressure measured in pounds per square inch
- Pressure relative to the ambient pressure (correct)
- Pressure exerted by a fluid column
- Pressure equivalent to standard atmospheric pressure
What is the traditional unit of pressure in the imperial and US customary systems?
What is the traditional unit of pressure in the imperial and US customary systems?
- Atmosphere (atm)
- Pound-force per square inch (psi) (correct)
- Pascal (Pa)
- Torr
What is the definition of pressure?
What is the definition of pressure?
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In which unit are pressures expressed in terms of the height of a column of a particular fluid in a manometer?
In which unit are pressures expressed in terms of the height of a column of a particular fluid in a manometer?
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Study Notes
Pressure Units and Definitions
- The SI unit of pressure is the pascal (Pa).
- Gauge pressure is the pressure relative to atmospheric pressure.
- In the imperial and US customary systems, the traditional unit of pressure is the pound per square inch (psi).
- Pressure is defined as the perpendicular force per unit area, or force per unit area, typically expressed in units of force per unit area (e.g. N/m² or Pa).
- In a manometer, pressures are expressed in terms of the height of a column of a particular fluid, typically in units of millimeters of mercury (mmHg) or inches of mercury (inHg).
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