RETA CARO Test 1: 2026 update | comprehensive
questions and verified answers (complete solutions)
A+ GRADE!
Conduction is defined as heat energy that is - ✔✔ANSWER✔✔-moving through
a solid substance
What is the primary purpose of a refrigeration system ? - ✔✔ANSWER✔✔-
achieve and maintain a temperature
What is a hazard of trapping liquid ? - ✔✔ANSWER✔✔-A possible release
How much can the pressure of trapped liquid increase per degree Fahrenheit
of temperature increase - ✔✔ANSWER✔✔-100 to 150 psi
Mechanical refrigeration is a series of steps that - ✔✔ANSWER✔✔-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 ? - ✔✔ANSWER✔✔-Drawing out vaporized refrigerant at a
rate to maintain the desired evaporating pressure
, Which natural refrigerant is considered to be non- flammable -
✔✔ANSWER✔✔-Carbon Dioxide
Heat energy always flows - ✔✔ANSWER✔✔-from an object at a higher
temperature to an object at a lower temperature
32 psia equals - ✔✔ANSWER✔✔-17.3 psig
0 ° F is equal to - ✔✔ANSWER✔✔--18 ° C
What is one positive characteristic of halocarbon refrigerants ? -
✔✔ANSWER✔✔-They are usually not flammable
What is the primary reason for concern about HCFC- 22 concentration in an
engine room ? - ✔✔ANSWER✔✔-Oxygen deprivation
O psig is equal to - ✔✔ANSWER✔✔-14.7 psia
Discharge vapor from all compressors - ✔✔ANSWER✔✔-will contain some
level of superheat
Which category of compressor " traps " a volume of refrigerant vapor prior to
compression ? - ✔✔ANSWER✔✔-Positive displacement
When suction pressure rises , the operator should - ✔✔ANSWER✔✔-start
another compressor
questions and verified answers (complete solutions)
A+ GRADE!
Conduction is defined as heat energy that is - ✔✔ANSWER✔✔-moving through
a solid substance
What is the primary purpose of a refrigeration system ? - ✔✔ANSWER✔✔-
achieve and maintain a temperature
What is a hazard of trapping liquid ? - ✔✔ANSWER✔✔-A possible release
How much can the pressure of trapped liquid increase per degree Fahrenheit
of temperature increase - ✔✔ANSWER✔✔-100 to 150 psi
Mechanical refrigeration is a series of steps that - ✔✔ANSWER✔✔-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 ? - ✔✔ANSWER✔✔-Drawing out vaporized refrigerant at a
rate to maintain the desired evaporating pressure
, Which natural refrigerant is considered to be non- flammable -
✔✔ANSWER✔✔-Carbon Dioxide
Heat energy always flows - ✔✔ANSWER✔✔-from an object at a higher
temperature to an object at a lower temperature
32 psia equals - ✔✔ANSWER✔✔-17.3 psig
0 ° F is equal to - ✔✔ANSWER✔✔--18 ° C
What is one positive characteristic of halocarbon refrigerants ? -
✔✔ANSWER✔✔-They are usually not flammable
What is the primary reason for concern about HCFC- 22 concentration in an
engine room ? - ✔✔ANSWER✔✔-Oxygen deprivation
O psig is equal to - ✔✔ANSWER✔✔-14.7 psia
Discharge vapor from all compressors - ✔✔ANSWER✔✔-will contain some
level of superheat
Which category of compressor " traps " a volume of refrigerant vapor prior to
compression ? - ✔✔ANSWER✔✔-Positive displacement
When suction pressure rises , the operator should - ✔✔ANSWER✔✔-start
another compressor
