
#5 EPA 608 CORE

Quiz
•
Other
•
11th Grade
•
Easy
Mike Conway
Used 556+ times
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25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a reason to heat a system during dehydration?
To prevent oxidation.
To increase oil viscosity.
To decrease dehydration time.
To increase dehydration time.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which refrigerant depletes the ozone layer?
R-717
R-744
R-22
R-32
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the state of the refrigerant entering the compressor of a refrigeration system?
Low pressure liquid
Low pressure vapor
High pressure liquid
High pressure vapor
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements is true?
There is no difference between refrigerant grade hydrocarbon refrigerant and propane for grills.
Propane cylinders for grilling contain impurities that can damage refrigeration equipment.
Refrigerant-grade hydrocarbon refrigerant is of lower quality than consumer propane cylinders.
Hydrocarbon refrigerants can be used as a retrofit refrigerant.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do EPA regulations require appliances to have a service aperture or process stub?
To make it easier to recover refrigerant.
To check for open motor windings.
To vent non-condensibles.
To dehydrate the system oil.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which process applies to cleaning refrigerant for immediate reuse by oil separation and single or multiple passes through devices, like replaceable core filter driers, which reduce moisture and acidity?
Recycling
Recovering
Reclaiming
Restoring
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which oil is used with most HFC refrigeration applications?
Esters
Alkyl-benzenes
Mineral oil
Any oil that is compatible with both CFC and HCFC refrigerants
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