Refrigeration Operating
Engineer License Exam Practice
Test Questions with Correct
Answers Pass the Exam, 100%
Verified () Graded A+
Oil pressure switch - 🧠 ANSWER ✔✔protects the compressor from
operating too long with no or partial lubrication.
Off cycle defrost - 🧠 ANSWER ✔✔Used on medium temperature systems
for defrost by the air in the cooler which will be above 32°.
, Filter dryer - 🧠 ANSWER ✔✔Removes dirt and moisture out of the
refrigerator.
Suction accumulator - 🧠 ANSWER ✔✔Prevents liquid refrigerant from
entering the compressor.
Receiver - 🧠 ANSWER ✔✔Stores unused refrigerant in a system that uses
a metering device that varies the refrigerant flow with the load.
Two types of defrost used with low temperature fixtures are _____ and
_____. - 🧠 ANSWER ✔✔Hot gas and electric
You must evacuate and punch a hole in a DOT-39 container before
disposing of it. - 🧠 ANSWER ✔✔True
By Code, a licensed Refrigeration Operating Engineer cannot break into a
freon system in the City of Seattle. - 🧠 ANSWER ✔✔True
High temperature refrigeration is between ___ and ___. - 🧠 ANSWER
✔✔45 degrees F and 60 degrees F
Low temperature refrigeration is between ___ and ___. - 🧠 ANSWER ✔✔-
20 degrees F and 5 degrees F
Engineer License Exam Practice
Test Questions with Correct
Answers Pass the Exam, 100%
Verified () Graded A+
Oil pressure switch - 🧠 ANSWER ✔✔protects the compressor from
operating too long with no or partial lubrication.
Off cycle defrost - 🧠 ANSWER ✔✔Used on medium temperature systems
for defrost by the air in the cooler which will be above 32°.
, Filter dryer - 🧠 ANSWER ✔✔Removes dirt and moisture out of the
refrigerator.
Suction accumulator - 🧠 ANSWER ✔✔Prevents liquid refrigerant from
entering the compressor.
Receiver - 🧠 ANSWER ✔✔Stores unused refrigerant in a system that uses
a metering device that varies the refrigerant flow with the load.
Two types of defrost used with low temperature fixtures are _____ and
_____. - 🧠 ANSWER ✔✔Hot gas and electric
You must evacuate and punch a hole in a DOT-39 container before
disposing of it. - 🧠 ANSWER ✔✔True
By Code, a licensed Refrigeration Operating Engineer cannot break into a
freon system in the City of Seattle. - 🧠 ANSWER ✔✔True
High temperature refrigeration is between ___ and ___. - 🧠 ANSWER
✔✔45 degrees F and 60 degrees F
Low temperature refrigeration is between ___ and ___. - 🧠 ANSWER ✔✔-
20 degrees F and 5 degrees F
