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CORE
PRACTICE TEST 1
ARE YOU READY?
LET’S PRACTICE!
A system is considered dehydrated when
Deselect Answer
the vacuum indicator shows you have reached and held the required vacuum.
it asks you for a drink of water.
the vacuum pump has run at least 5 hours.
the manifold suction gauge has held a 30 inch hg vacuum for 3 hours.
None
The EPA can require a technician to demonstrate the abilities to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate competency can result in
Deselect Answer
seizure of any refrigerant purchased by the technician that they still are in possession of.
mandatory attendance at refrigeration training boot camp where they will have to run in place for 8 hours/day while holding a manifold gauge set over their head.
seizure of the technicians recovery/recycling equipment.
revocation of the technicians certification.
None
When scrapping a disposable refrigerant cylinder, the internal cylinder pressure should be reduced to at least
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20 psig
12 psig
0 psig
15 psig
None
Which of the following statements is true about an azeotrope refrigerant mixture?
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It has a pressure-temperature curve identical to one of its components.
It is always made from just two components.
It is a mixture that acts like a single component refrigerant over its entire range.
It is a mixture made from at least three different refrigerants.
None
After 1995 supplies of CFC refrigerants used to service existing refrigeration appliances in the United States can only come from
Deselect Answer
solvent conversion.
European manufacturers.
third-world chemical companies.
recovery and recycling.
None
Time’s up
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