Understanding Pressure and Its Measurement

What is pressure measured in?

• Mass exerted per unit area

• Force exerted per unit volume

• Force exerted per unit area

• Mass exerted per unit volume

What is the standard atmospheric pressure at sea level?

• 14.696 psi

• 12.200 psi

• 101.325 kPa

• 84.116 kPa

What does Pascal's Law state?

• Pressure applied to a confined static fluid is transmitted equally throughout

• Pressure applied to a confined fluid increases with depth

• Pressure applied to a confined fluid decreases with depth

• Pressure in a fluid is constant throughout

What is the unit for measuring pressure in the International System of Units (SI)?

• Pascal (Pa)

• Pounds per square inch (psi)

• Atmospheres (atm)

• Bar

What type of pressure is measured with atmospheric pressure as the zero point?

• Absolute pressure

• Gauge pressure

• Vacuum pressure

• Differential pressure

What is hydrostatic pressure?

• Pressure due to the height of a liquid column

• Pressure due to the density of a liquid

• Pressure measured in a moving fluid

• Pressure measured in a gas

What does a U-tube manometer measure?

• Vacuum pressure

• All of the above

• Differential pressure

• Atmospheric pressure

What is the principle behind a Bourdon tube?

• Hydraulic pressure transmission

• Elastic deformation in response to pressure changes

• Vibrational frequency change with pressure

• Electrical resistance change with pressure

What is the correct formula for calculating pressure?

• P = ρgh

• P = mgh

• P = F/A

• P = mv

What does a diaphragm in a pressure sensor do?

• Measures temperature changes

• Converts electrical signals to pressure

• Flexes in response to pressure changes

• Measures fluid flow rate