Exam 1 Preparation Quiz

A substance is a compressed liquid. What is its quality (x)?

• x = 0

• x < 0

• x = 1

• It does not have a quality

The ________ is the location on a phase diagram where a substance can be a solid, liquid, and vapor in equilibrium.

• triple line

• critical point

• saturation

• evaporation

R-134a exists at 60 psia and 200 degrees F. What is its phase?

• Compressed Liquid

• Saturated Liquid

• Liquid-Vapor Mixture

• Saturated Vapor

• Superheated Vapor

H₂O exists at 60 psia and 3 ft³/lbm. What is its phase?

• Compressed Liquid

• Saturated Liquid

• Liquid-Vapor Mixture

• Saturated Vapor

• Superheated Vapor

H₂O exists at 300 bar and 0.001 m³/kg. What is its phase?

• Compressed Liquid

• Saturated Liquid

• Liquid-Vapor Mixture

• Saturated Vapor

• Superheated Vapor

Air exists at 200 degrees Fahrenheit and 20 psia. Draw its state on a P-v diagram, along with its associated isotherm.

R-134a exists at 800 kPa and 0.02 m3/kg. Draw its state on a T-v diagram, along with its associated isobar.

An example of a PERFECT ideal gas is

• H20

• Air

• R-134a

• Helium

• Carbon Dioxide