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RAC 40 Quiz 3 review Questions and
Answers Latest 2026
The _____ compressor is another positive displacement
compressor and is used for larger air conditioning and
refrigeration applications. Ans: Screw Compressor
The four (4) major components of a vapor compression
refrigeration system are the compressor, condenser,
evaporator, and ________ ______. Ans: Metering device
The amount of heat a refrigerant contains with -40F as
the 0 heat content reference point is called Ans:
Enthalpy
From a performance standpoint, a substitute for R-12 is
Ans: R-134A
The ___________ __________ is referred to as a kinetic
displacement compressor. Ans: Centrifugal Compressor
The refrigerant vapor picks up additional heat as it flows
from the evaporator to the compressor. The heat is
picked up from the Ans: Suction line
What is the purpose of the metering device? Ans: Meters
the flow of refrigerant entering the evaporator, reduces
the boiling point to create a pressure/temperature drop
© 2025 All rights reserved
, 2 | Page
When the refrigerant leaves the metering device, it is not
100% liquid. Why? Ans: Because flash gas occurs and
causes the 100% liquid to turn into 25% vapor and 75%
liquid.
Rejects both sensible and latent heat from the
refrigeration system. Ans: Condenser
Abort heat from the system Ans: Evaporator
Is the heart of the refrigeration system Ans: Compressor
A valve or small fixed-size tubing or orifice that meters
liquid refrigerant into the evaporator Ans: Metering
device
R-502 Ans: Orchid
R-12 Ans: White
R-717 Ans: Silver
R-11 Ans: Orange
R-114 Ans: Dark Blue
R-134a Ans: Light Blue
R-113 Ans: Purple
R-500 Ans: Yellow Orange
R-22 Ans: Green
© 2025 All rights reserved
RAC 40 Quiz 3 review Questions and
Answers Latest 2026
The _____ compressor is another positive displacement
compressor and is used for larger air conditioning and
refrigeration applications. Ans: Screw Compressor
The four (4) major components of a vapor compression
refrigeration system are the compressor, condenser,
evaporator, and ________ ______. Ans: Metering device
The amount of heat a refrigerant contains with -40F as
the 0 heat content reference point is called Ans:
Enthalpy
From a performance standpoint, a substitute for R-12 is
Ans: R-134A
The ___________ __________ is referred to as a kinetic
displacement compressor. Ans: Centrifugal Compressor
The refrigerant vapor picks up additional heat as it flows
from the evaporator to the compressor. The heat is
picked up from the Ans: Suction line
What is the purpose of the metering device? Ans: Meters
the flow of refrigerant entering the evaporator, reduces
the boiling point to create a pressure/temperature drop
© 2025 All rights reserved
, 2 | Page
When the refrigerant leaves the metering device, it is not
100% liquid. Why? Ans: Because flash gas occurs and
causes the 100% liquid to turn into 25% vapor and 75%
liquid.
Rejects both sensible and latent heat from the
refrigeration system. Ans: Condenser
Abort heat from the system Ans: Evaporator
Is the heart of the refrigeration system Ans: Compressor
A valve or small fixed-size tubing or orifice that meters
liquid refrigerant into the evaporator Ans: Metering
device
R-502 Ans: Orchid
R-12 Ans: White
R-717 Ans: Silver
R-11 Ans: Orange
R-114 Ans: Dark Blue
R-134a Ans: Light Blue
R-113 Ans: Purple
R-500 Ans: Yellow Orange
R-22 Ans: Green
© 2025 All rights reserved
