REFRIGERANT 410A CERTIFICATION EXAM Updated
Practice Questions WITH 100% RATED Correct
Answers/EXPERT VERIFIED JUST RELEASED GET IT A+
40% to 70% higher - CORRECT ANSWER-Both suction and discharge pressure of R-410a
systems are _____ than R-22 systems.
Lower - CORRECT ANSWER-Because of its higher vapor capacity, the discharge temperature
of R-410a is _____ than R-22.
610 psig plus or minus 10psig - CORRECT ANSWER-R-410a systems use a high pressure
switch that will open at approximately:
lose or gain - CORRECT ANSWER-Subcooled liquid in the receiver may _____ subcooling,
depending on surrounding conditions.
800 psig - CORRECT ANSWER-When installing a liquid line filter drier on a R-410a system, be
certain that it has a pressure rating of at least:
Smaller than that of a R-22 Metering device - CORRECT ANSWER-The flow area of a R-410a
metering device is:
It may separate (fractionate) into its component refrigerants - CORRECT ANSWER-Which of
the following statements is true of R-407c
will not fractionate - CORRECT ANSWER-A true azeotropic blend:
, -Leaks may cause a change in composition of the blend
-It will have temperature glide
-It can fractionate - CORRECT ANSWER-When a blend is zeotropic, or near-azeotropic
(NARM)
It should be transferred from cylinders as a liquid to avoid fractionation - CORRECT
ANSWER-When a blend is zeotropic, or near azeotropic (NARM)
Cause the components to leak at uneven rates due to varying vapor pressures - CORRECT
ANSWER-Near-azeotropic blend fractionation may;
None of the above - CORRECT ANSWER-Blends that have fractionated, depending on the
constituent make-up, may become;
Should be charged in the liquid phase - CORRECT ANSWER-To avoid fractionation, blended
refrigerants:
Be sure it is throttled into the low side to avoid compressor damage - CORRECT ANSWER-
When charging an operating R-410a system with liquid refrigerant,
The less temperature glide it will have - CORRECT ANSWER-The closer a blend comes to
being a true azeotrope,
-Suva 410a
-AZ-20
-Puron - CORRECT ANSWER-R-410a is also known as?
0.3 - CORRECT ANSWER-The temperature glide for R-410a is less than _____ degrees
Fahrenheit over air conditioning and refrigeration operating ranges.
-Can be irritating to the skin
-Is hydroscopic
Practice Questions WITH 100% RATED Correct
Answers/EXPERT VERIFIED JUST RELEASED GET IT A+
40% to 70% higher - CORRECT ANSWER-Both suction and discharge pressure of R-410a
systems are _____ than R-22 systems.
Lower - CORRECT ANSWER-Because of its higher vapor capacity, the discharge temperature
of R-410a is _____ than R-22.
610 psig plus or minus 10psig - CORRECT ANSWER-R-410a systems use a high pressure
switch that will open at approximately:
lose or gain - CORRECT ANSWER-Subcooled liquid in the receiver may _____ subcooling,
depending on surrounding conditions.
800 psig - CORRECT ANSWER-When installing a liquid line filter drier on a R-410a system, be
certain that it has a pressure rating of at least:
Smaller than that of a R-22 Metering device - CORRECT ANSWER-The flow area of a R-410a
metering device is:
It may separate (fractionate) into its component refrigerants - CORRECT ANSWER-Which of
the following statements is true of R-407c
will not fractionate - CORRECT ANSWER-A true azeotropic blend:
, -Leaks may cause a change in composition of the blend
-It will have temperature glide
-It can fractionate - CORRECT ANSWER-When a blend is zeotropic, or near-azeotropic
(NARM)
It should be transferred from cylinders as a liquid to avoid fractionation - CORRECT
ANSWER-When a blend is zeotropic, or near azeotropic (NARM)
Cause the components to leak at uneven rates due to varying vapor pressures - CORRECT
ANSWER-Near-azeotropic blend fractionation may;
None of the above - CORRECT ANSWER-Blends that have fractionated, depending on the
constituent make-up, may become;
Should be charged in the liquid phase - CORRECT ANSWER-To avoid fractionation, blended
refrigerants:
Be sure it is throttled into the low side to avoid compressor damage - CORRECT ANSWER-
When charging an operating R-410a system with liquid refrigerant,
The less temperature glide it will have - CORRECT ANSWER-The closer a blend comes to
being a true azeotrope,
-Suva 410a
-AZ-20
-Puron - CORRECT ANSWER-R-410a is also known as?
0.3 - CORRECT ANSWER-The temperature glide for R-410a is less than _____ degrees
Fahrenheit over air conditioning and refrigeration operating ranges.
-Can be irritating to the skin
-Is hydroscopic
