RETA CARO ACTUAL TEST QUESTIONS WITH DETAILED
VERIFIED ANSWERS ALREADY GRADED A 2026
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
, Why does the refrigerant in the condenser change state from vapor to liquid -ANSWER-The
refrigerant loses heat energy to the surrounding environment
If a liquid is below its saturation temperature what is its condition ? -ANSWER-Subcooled
What are the four necessary components of a mechanical refrigeration system ? -ANSWER-
expansion device , evaporator , compressor , condenser
Superheat is found at which points of a typical system ? -ANSWER-The compressor suction
and compressor discharge line
What are the replacement blended refrigerants called ? -ANSWER-An azeotrope or zeotrope
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
The crankcase oil heater should be ON -ANSWER-when the compressor is off .
VERIFIED ANSWERS ALREADY GRADED A 2026
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
, Why does the refrigerant in the condenser change state from vapor to liquid -ANSWER-The
refrigerant loses heat energy to the surrounding environment
If a liquid is below its saturation temperature what is its condition ? -ANSWER-Subcooled
What are the four necessary components of a mechanical refrigeration system ? -ANSWER-
expansion device , evaporator , compressor , condenser
Superheat is found at which points of a typical system ? -ANSWER-The compressor suction
and compressor discharge line
What are the replacement blended refrigerants called ? -ANSWER-An azeotrope or zeotrope
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
The crankcase oil heater should be ON -ANSWER-when the compressor is off .
