RETA CARO Exam questions with
verified answers
What is the purpose of a refrigeration system? - correct answer ✔✔To maintain a temperature
Operators must keep refrigeration systems operating safely and efficiently. Which of the following best
describes the areas of required knowledge for this to be possible? - correct answer ✔✔Basic physical
principles, interpretation of information from temperature and pressure gauges, basic operating
principles.
Mechanical refrigeration is a series of steps that: - correct answer ✔✔Moves heat energy from a space
or object to an area where it can do no harm.
Heat energy always flows: - correct answer ✔✔from an object at a higher temperature to an object at a
lower temperature
Sensible heat: - correct answer ✔✔is heat energy that causes a change in temperature but does not
cause a change of state.
Latent heat: - correct answer ✔✔is heat energy that causes a change of state but does not cause a
change in temperature.
Which of the answers below is an example of heat transfer by convection? - correct answer ✔✔Warm air
moving over an object.
How does the refrigeration technician/operator know what the conditions are within a refrigeration
system? - correct answer ✔✔By using his knowledge of system basic operating principles to evaluate
temperature and pressure readings.
What is the scale used to measure Fahrenheit temperature absolute? - correct answer ✔✔Rankine
verified answers
What is the purpose of a refrigeration system? - correct answer ✔✔To maintain a temperature
Operators must keep refrigeration systems operating safely and efficiently. Which of the following best
describes the areas of required knowledge for this to be possible? - correct answer ✔✔Basic physical
principles, interpretation of information from temperature and pressure gauges, basic operating
principles.
Mechanical refrigeration is a series of steps that: - correct answer ✔✔Moves heat energy from a space
or object to an area where it can do no harm.
Heat energy always flows: - correct answer ✔✔from an object at a higher temperature to an object at a
lower temperature
Sensible heat: - correct answer ✔✔is heat energy that causes a change in temperature but does not
cause a change of state.
Latent heat: - correct answer ✔✔is heat energy that causes a change of state but does not cause a
change in temperature.
Which of the answers below is an example of heat transfer by convection? - correct answer ✔✔Warm air
moving over an object.
How does the refrigeration technician/operator know what the conditions are within a refrigeration
system? - correct answer ✔✔By using his knowledge of system basic operating principles to evaluate
temperature and pressure readings.
What is the scale used to measure Fahrenheit temperature absolute? - correct answer ✔✔Rankine
