RETA CARO Exam Practice Test –
Refrigeration Questions and Answers||
GRADED A+|| LATEST UPDATE 2026
Conduction is defined as heat energy that is -CORRECTANSWER moving through a
solid substance
What is the primary purpose of a refrigeration system ? -CORRECTANSWER achieve
and maintain a temperature
What is a hazard of trapping liquid ? -CORRECTANSWER A possible release
How much can the pressure of trapped liquid increase per degree Fahrenheit of
temperature increase -CORRECTANSWER 100 to 150 psi
Mechanical refrigeration is a series of steps that -CORRECTANSWER moves heat
energy from a space or object to an area where it can do no harm
How does the refrigeration compressor maintain the temperature in the system
evaporators ? -CORRECTANSWER Drawing out vaporized refrigerant at a rate to
maintain the desired evaporating pressure
, Which natural refrigerant is considered to be non- flammable -CORRECTANSWER
Carbon Dioxide
Heat energy always flows -CORRECTANSWER from an object at a higher temperature
to an object at a lower temperature
32 psia equals -CORRECTANSWER 17.3 psig
0 ° F is equal to -CORRECTANSWER -18 ° C
Why does the refrigerant in the condenser change state from vapor to liquid -
CORRECTANSWER The refrigerant loses heat energy to the surrounding environment
If a liquid is below its saturation temperature what is its condition ? -
CORRECTANSWER Subcooled
What are the four necessary components of a mechanical refrigeration system ? -
CORRECTANSWER expansion device , evaporator , compressor , condenser
Superheat is found at which points of a typical system ? -CORRECTANSWER The
compressor suction and compressor discharge line
Refrigeration Questions and Answers||
GRADED A+|| LATEST UPDATE 2026
Conduction is defined as heat energy that is -CORRECTANSWER moving through a
solid substance
What is the primary purpose of a refrigeration system ? -CORRECTANSWER achieve
and maintain a temperature
What is a hazard of trapping liquid ? -CORRECTANSWER A possible release
How much can the pressure of trapped liquid increase per degree Fahrenheit of
temperature increase -CORRECTANSWER 100 to 150 psi
Mechanical refrigeration is a series of steps that -CORRECTANSWER moves heat
energy from a space or object to an area where it can do no harm
How does the refrigeration compressor maintain the temperature in the system
evaporators ? -CORRECTANSWER Drawing out vaporized refrigerant at a rate to
maintain the desired evaporating pressure
, Which natural refrigerant is considered to be non- flammable -CORRECTANSWER
Carbon Dioxide
Heat energy always flows -CORRECTANSWER from an object at a higher temperature
to an object at a lower temperature
32 psia equals -CORRECTANSWER 17.3 psig
0 ° F is equal to -CORRECTANSWER -18 ° C
Why does the refrigerant in the condenser change state from vapor to liquid -
CORRECTANSWER The refrigerant loses heat energy to the surrounding environment
If a liquid is below its saturation temperature what is its condition ? -
CORRECTANSWER Subcooled
What are the four necessary components of a mechanical refrigeration system ? -
CORRECTANSWER expansion device , evaporator , compressor , condenser
Superheat is found at which points of a typical system ? -CORRECTANSWER The
compressor suction and compressor discharge line
