Practice Exam: Universal R-410A Actual Exam for
2024-2025 Exam Questions with 100% Correct
Answers | Verified | Updated (Actual Exam)
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Terms in this set (25)
Polyolester (POE) oils Absorb moisture through the plastic
stored in plastic
containers will:
-Separate
-Become more alkaline
-Become acidic
-Absorb moisture through
the plastic
R-407C has: The ability to fractionate
-A foul odor
-To be charged in the
vapor phase
-The ability to fractionate
-No temperature glide
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, 12/2/25, 8:12 AM Practice Exam: Universal R-410A Actual Exam for 2024-2025 Exam Questions with 100% Correct Answers | Verified | Updated (Act…
A condensing unit Both A and B
designed for use with R-
22:
-Must be replaced with a
model designed for use
with R-410A
-Cannot withstand the
higher pressure of R-410A
-Both A and B
-None of the above
In a refrigeration system, Mix with each other
oil and refrigerant:
-Contain alkybenzene
-Mix with each other
-Do not touch each other
-Are not miscible
Removal of refrigerant Active and passive
from a system can be
accomplished by these
two basic methods:
-Condensation and
evaporation
-Dew point and bubble
point
-Superheating and
subcooling
-Active and passive
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