HVAC Refrigeration Reviewed Exam
Questions With Correct Answers
Specific heat☑️Correct Ans-the amount of heat needed to raise the temperature of 1 gram of a
substance by 1 degree Celsius
Barometer☑️Correct Ans-A device used to measure atmospheric pressure. 2 types , one
mercury known as a Mercury barometer
Superheat☑️Correct Ans-temperature above its saturation point(boiling point)
Subcooling☑️Correct Ans-temperature below its saturation point(boiling point)
The refrigerant gives up heat when
A.It condenses
B.It evaporates
C.It compresses
D.It vaporizes☑️Correct Ans-A. It condenses
The State of the refrigerant in the suction line should be☑️Correct Ans-low pressure/low
temperature vapor
The state of refrigerant entering the condenser is☑️Correct Ans-high pressure/ high superheated
vapor
Zero PSIA(pounds per square inch absolute)☑️Correct Ans-pounds per square inch absolute the
absolute scale at zero would be no pressure at all
Questions With Correct Answers
Specific heat☑️Correct Ans-the amount of heat needed to raise the temperature of 1 gram of a
substance by 1 degree Celsius
Barometer☑️Correct Ans-A device used to measure atmospheric pressure. 2 types , one
mercury known as a Mercury barometer
Superheat☑️Correct Ans-temperature above its saturation point(boiling point)
Subcooling☑️Correct Ans-temperature below its saturation point(boiling point)
The refrigerant gives up heat when
A.It condenses
B.It evaporates
C.It compresses
D.It vaporizes☑️Correct Ans-A. It condenses
The State of the refrigerant in the suction line should be☑️Correct Ans-low pressure/low
temperature vapor
The state of refrigerant entering the condenser is☑️Correct Ans-high pressure/ high superheated
vapor
Zero PSIA(pounds per square inch absolute)☑️Correct Ans-pounds per square inch absolute the
absolute scale at zero would be no pressure at all
