RETA CARO COMPREHENSIVE EXAMINATION
TEST 2026 QUESTIONS WITH ANSWERS 100%
CORRECT
◉ 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 .
, ◉ Slugging is caused by Answer: oil or liquid refrigerant
◉ What should be done if liquid refrigerant appears while draining
oil ? Answer: Do what the SOP states
◉ Proper oil management for a refrigeration system requires that
Answer: a log should record all oil added to and removed from a
system
◉ When heat is added to saturated liquid refrigerant it will always
Answer: evaporate
◉ What effect does the addition of fins to evaporator coils have ?
Answer: It increases the efficiency of a unit by increasing the surface
area
◉ During hot gas defrost Answer: high pressure gas flows through
and condenses in the evaporator
◉ Evaporative condensers Answer: derive their heat rejection
capability from the evaporation of water
TEST 2026 QUESTIONS WITH ANSWERS 100%
CORRECT
◉ 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 .
, ◉ Slugging is caused by Answer: oil or liquid refrigerant
◉ What should be done if liquid refrigerant appears while draining
oil ? Answer: Do what the SOP states
◉ Proper oil management for a refrigeration system requires that
Answer: a log should record all oil added to and removed from a
system
◉ When heat is added to saturated liquid refrigerant it will always
Answer: evaporate
◉ What effect does the addition of fins to evaporator coils have ?
Answer: It increases the efficiency of a unit by increasing the surface
area
◉ During hot gas defrost Answer: high pressure gas flows through
and condenses in the evaporator
◉ Evaporative condensers Answer: derive their heat rejection
capability from the evaporation of water
