Low GWP Refrigerant Exam Questions And Answers
Practice Questions with Solutions Newest | Already
Graded A+.
An uppercase letter designation (R-407A, R-407B, R-
407C) is used when refrigerant blends are:
Composed of the same refrigerant, but with the same
percentages of each.
Composed of different refrigerants but have the same
thermodynamic properties.
,Composed of the same refrigerants but manufactured by
different companies.
Composed of the same refrigerants, but with different
percentages of each. - ANSWER-Composed of the same
refrigerants, but with different percentages of each.
Flammable refrigerant cylinders must have:
Dip tube allowing for liquid transfer.
One-time pressure relief.
Permanently installed pressure/ temperature gauge.
,Red band at the top of the container. - ANSWER-Red
band at the top of the container.
Which of the following refrigerants has the lowest global
warming potential (GWP)?
R-32
R-290
R-404A
R-454B - ANSWER-R-290
Which of the following should be done prior to beginning
the recovery process?
, Change the oil in the vacuum pump.
Inform local authority having jurisdiction.
Purge air from the refrigerant hoses to prevent refrigerant
contamination.
Vent the contents of the recovery tank to ensure it is
empty. - ANSWER-Purge air from the refrigerant hoses to
prevent refrigerant contamination.
When working with A2L refrigerants, which one of the
following is not an approved leak detection method?
Practice Questions with Solutions Newest | Already
Graded A+.
An uppercase letter designation (R-407A, R-407B, R-
407C) is used when refrigerant blends are:
Composed of the same refrigerant, but with the same
percentages of each.
Composed of different refrigerants but have the same
thermodynamic properties.
,Composed of the same refrigerants but manufactured by
different companies.
Composed of the same refrigerants, but with different
percentages of each. - ANSWER-Composed of the same
refrigerants, but with different percentages of each.
Flammable refrigerant cylinders must have:
Dip tube allowing for liquid transfer.
One-time pressure relief.
Permanently installed pressure/ temperature gauge.
,Red band at the top of the container. - ANSWER-Red
band at the top of the container.
Which of the following refrigerants has the lowest global
warming potential (GWP)?
R-32
R-290
R-404A
R-454B - ANSWER-R-290
Which of the following should be done prior to beginning
the recovery process?
, Change the oil in the vacuum pump.
Inform local authority having jurisdiction.
Purge air from the refrigerant hoses to prevent refrigerant
contamination.
Vent the contents of the recovery tank to ensure it is
empty. - ANSWER-Purge air from the refrigerant hoses to
prevent refrigerant contamination.
When working with A2L refrigerants, which one of the
following is not an approved leak detection method?
