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R-410A Certification Final / R-410A Safety & Training Combined Sets Examination Questions With Revised Correct Detailed Answers |ALREADY GRADED A+ PASS >> BRAND NEW VERSION!! STUDY MATERIAL $12.99
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R-410A Certification Final / R-410A Safety & Training Combined Sets Examination Questions With Revised Correct Detailed Answers |ALREADY GRADED A+ PASS >> BRAND NEW VERSION!! STUDY MATERIAL
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Course
R410a Certification
Institution
R410a Certification
R-410A Certification Final / R-410A Safety
& Training Combined Sets Examination
Questions With Revised Correct Detailed
Answers
|ALREADY GRADED A+ PASS
>> BRAND NEW VERSION!!
STUDY MATERIAL
1. Hygroscopic - ANSWER
the air.
(of a substance) tending to absorb moisture fr...
R-410A Certification Final / R-410A Safety
& Training Combined Sets Examination
Questions With Revised Correct Detailed
Answers
|ALREADY GRADED A+ PASS
>> BRAND NEW VERSION!!
STUDY MATERIAL
1. Hygroscopic - ANSWER (of a substance) tending to absorb moisture from
the air.
2. Near-Azeotropic blend - ANSWER A blend that acts very much like an
azeotrope but has a small volumetric composition change and temperature
glide as it evaporates and condenses.
3. Azeotrope - ANSWER A constant-boiling mixture. A mixture of two liquids
that boils at constant composition—The vapor's composition is the same as
liquid's
4. Fractionation - ANSWER When one or more refrigerants of the same
blend leak at a faster rate than other refrigerants in the blend, changing the
composition of the blend
,5. Zeotrope - ANSWER Refrigerant blends that change volumetric
composition and saturation temperatures as they evaporate or condense at
constant pressure. Zeotrope have a temperature glide as they evaporate and
condense
6. If a R-410A system develops a leak, Who are you going to call - ANSWER
Rob Wildman
7. When installing a liquid line filter drier on a R-410A system, be certain that it
has a pressure rating of at least:
A. 500 psig
B. 600 psig
C. 700 psig
D. 800 psig - ANSWER B. 600 psig
8. The flow area of a R-410A metering device is:
A. R-410A does not require a metering device
B. larger than that of a R-22 metering device
C. smaller than that of a R-22 metering device
D. The same as that of a R-22 metering device - ANSWER C. Smaller than that
of a R-22 metering device
9. Temperature glide refers to:
A. A range of condensing and evaporating temperatures for one pressure
B. A refrigerant that has a range of temperatures
C. A refrigerant that has a range slipperiness based on its temperature
, D. A refrigerant that has a range of slipperiness based on temperature divided by
pressure - ANSWER A. A range of condensing and evaporating temperatures
for one pressure
10. When a blend is zeotropic, or near-azeotropic (NARM):
A. It should be charged as a vapor
B. It should be transferred from cylinders as a liquid to avoid fractionization.
C. Its vapor and liquid pressures will be equal at a given temperature
D. A capillary tube must be used - ANSWER B. It should be transferred from
cylinders as a liquid to avoid fractionization
11. Cylinders containing R410a that are equipped with dip tubes:
A. To determine how much remains in the cylinder
B. To allow vapor charging in the inverted position
C. To allow liquid to be removed with the cylinder upright
D. None of the above - ANSWER C. To allow liquid to be removed with the
cylinder upright
12. Near-azeotropic blend fractionation may:
A. Cause the components to leak at uneven rates due to varying vapor pressures
B. Cause hydrochloric acid to form
C. Require the use of re-fraction recovery equipment
D. Cause condenser oil logging - ANSWER Cause the components to leak at
uneven rates due to varying vapor pressures
13. The closer a blend comes to being a true azeotrope,
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