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Questions and Answers
What is the equivalent of 1 bar in units of Pa?
What is the equivalent of 1 bar in units of Pa?
- 1020 Pa
- 105 Pa (correct)
- 100 Pa
- 10 Pa
What is the absolute pressure measured relative to in all calculations of state?
What is the absolute pressure measured relative to in all calculations of state?
- Absolute zero pressure (correct)
- Gauge pressure
- Atmospheric pressure
- Relative pressure
What is the equivalent of 1 atm in units of bar?
What is the equivalent of 1 atm in units of bar?
- 0.101325 bar
- 10.1325 bar
- 0.013325 bar
- 1.01325 bar (correct)
What is the unit of pressure that is equal to 760 mmHg?
What is the unit of pressure that is equal to 760 mmHg?
What is the equivalent of 1 MPa in units of kPa?
What is the equivalent of 1 MPa in units of kPa?
What type of pressure measurement is often used in real-world applications?
What type of pressure measurement is often used in real-world applications?
What is the term for pressure measured relative to atmospheric pressure?
What is the term for pressure measured relative to atmospheric pressure?
What is the reference point for gauge pressure measurement?
What is the reference point for gauge pressure measurement?
What type of pressure is measured with respect to a complete vacuum?
What type of pressure is measured with respect to a complete vacuum?
What is the term for pressure measured with respect to the surrounding environment?
What is the term for pressure measured with respect to the surrounding environment?
What is the unit of pressure in the SI system?
What is the unit of pressure in the SI system?
What is the unit of pressure in the English system?
What is the unit of pressure in the English system?
What is the force per unit area called?
What is the force per unit area called?
What is the equivalent of Pascal in the SI system?
What is the equivalent of Pascal in the SI system?
What is the unit of pressure that is not mentioned in the passage?
What is the unit of pressure that is not mentioned in the passage?
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Study Notes
Units of Pressure
- 1 bar is equivalent to 105 Pa, 102 kPa, and 0.1 MPa
- 1 atm (atmospheric pressure) is equivalent to 1.01325 bar, 14.696 psia, and 760 mmHg
Pressure Measurement
- Pressure is measured relative to absolute zero pressure in all calculations of state
- Pressure can be measured relative to atmospheric pressure, which is called gauge or vacuum pressure
Definition of Pressure
- Pressure is defined as force per unit area
- The unit of pressure is the Pascal (Pa) in the SI system, which is equivalent to N/m2
- In the English system, the unit of pressure is psia (pound-force per square inch absolute) or lbf/in2
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