RETA CARO EXAM QUESTIONS
AND ANSWERS
What is the use of a refrigeration system? - ANSWER To sustain a
temperature.
Operators must keep refrigeration systems running safely and effectively.
Which of the following best characterises the areas of expertise required to
make this possible? - ANSWER Basic physical principles, data interpretation
from temperature and pressure gauges, and basic operational principles.
Mechanical refrigeration involves a sequence of steps that: Transfers heat
energy from a space or object to a location where it cannot harm.
Heat energy always travels from an object at a higher temperature to another
thing at a lower temperature.
Sensible heat is defined as heat energy that causes a change in temperature but
not a change in state.
Latent heat is heat energy that produces a state change but not in temperature.
Which of the following answers is an example of heat transmission via
convection? - ANSWER Warm air flows across an object.
How can a refrigeration technician/operator know what conditions exist within a
refrigeration system? - ANSWER: By applying his knowledge of the system's
fundamental working principles to temperature and pressure readings.
What scale is used to determine absolute Fahrenheit temperature? - Answer:
Rankine
Which of the following is used to determine the amount of heat energy? -
ANSWER: British Thermal Units (BTUS), or calories.
AND ANSWERS
What is the use of a refrigeration system? - ANSWER To sustain a
temperature.
Operators must keep refrigeration systems running safely and effectively.
Which of the following best characterises the areas of expertise required to
make this possible? - ANSWER Basic physical principles, data interpretation
from temperature and pressure gauges, and basic operational principles.
Mechanical refrigeration involves a sequence of steps that: Transfers heat
energy from a space or object to a location where it cannot harm.
Heat energy always travels from an object at a higher temperature to another
thing at a lower temperature.
Sensible heat is defined as heat energy that causes a change in temperature but
not a change in state.
Latent heat is heat energy that produces a state change but not in temperature.
Which of the following answers is an example of heat transmission via
convection? - ANSWER Warm air flows across an object.
How can a refrigeration technician/operator know what conditions exist within a
refrigeration system? - ANSWER: By applying his knowledge of the system's
fundamental working principles to temperature and pressure readings.
What scale is used to determine absolute Fahrenheit temperature? - Answer:
Rankine
Which of the following is used to determine the amount of heat energy? -
ANSWER: British Thermal Units (BTUS), or calories.
