EPA 608 Certification Core Questions.2024
Halons were completely phased out by ______ :
1994
1995
1987
2000 -Correct Ans-1994
Recovered refrigerant is stored in which of the following painted tank:
Gray with yellow top
Yellow with gray top
Yellow with blue top
Blue with yellow top -Correct Ans-Gray with yellow top
If your recovery unit does not have a sub-cooling feature recovery rate will be _____ :
Recovery rate is independent
Slower
Faster -Correct Ans-Slower
TXV valve maintaining the pressure difference between _____ and _____ of the system
Expansion valve, Evaporator
Condenser, Evaporator
Compressor, Condenser
Evaporator, Compressor -Correct Ans-Condenser, Evaporator
,After recovering refrigerant from a sealed system, which of the following gas is used to
pressurize (for leak checking) or blow debris out of the system:
Hydrogen
Carbon dioxide
Oxygen
Nitrogen gas -Correct Ans-Nitrogen gas
Which one of the following has highest Ozone Depletion Potential (ODP):
HCFC
All will have same ODP
CFC
HFC -Correct Ans-CFC
The ____connects the evaporator to the compressor in a refrigerant system:
Suction Line
Evaporation Line
Discharge Line
Liquid Line -Correct Ans-Suction Line
A violation of the Clean Air Act, including improper record keeping, is subject to a
penalty of a fine of up to _____ per day per violation:
$37,500
$40,000
$24,000
$35,000 -Correct Ans-$37,500
,At which of the following stage in refrigeration cycle does the refrigerant changes from
high-pressure vapor to a high-pressure liquid:
Evaporator
Condenser
Compressor
Expansion valve -Correct Ans-Condenser
Which of the following is not most effective way to detect the general area of a small
leaks:
fluorescent Indicator
Ultrasonic tester
All the options are correct
Electronic tester -Correct Ans-fluorescent Indicator
During each vacuum decay test, it is observed that after creating the vacuum, the
pressure of the system increases to greater than 0 psig and stops at some point, Then:
Leak could not be observed
Leak is observed but not refrigerant is trapped
None of the answers are correct
The refrigerant could be trapped in the system -Correct Ans-The refrigerant could be
trapped in the system
Refrigerant cannot be called reclaimed unless it meets the ______ purity standard:
ARI-700
ARI-740
ARI-360
, ARI-1024 -Correct Ans-ARI-700
One chlorine atom in stratosphere can be able to destroy approximately _______
number of ozone molecules:
100,000
10,000
1000
100 -Correct Ans-100,000
It is to be ensured that the refrigerant recovery cylinder is not filled to more than _____
of its capacity
90 percent
60 percent
50 percent
80 percent -Correct Ans-80 percent
Only _____ refrigerant can be transferred or sold to another individual
Disposed
Reclaimed
Recovered
Recycled -Correct Ans-Reclaimed
Lifetime of CFCs is believed to be in the range ______ :
Above 1000 years
5 to 10 years
Halons were completely phased out by ______ :
1994
1995
1987
2000 -Correct Ans-1994
Recovered refrigerant is stored in which of the following painted tank:
Gray with yellow top
Yellow with gray top
Yellow with blue top
Blue with yellow top -Correct Ans-Gray with yellow top
If your recovery unit does not have a sub-cooling feature recovery rate will be _____ :
Recovery rate is independent
Slower
Faster -Correct Ans-Slower
TXV valve maintaining the pressure difference between _____ and _____ of the system
Expansion valve, Evaporator
Condenser, Evaporator
Compressor, Condenser
Evaporator, Compressor -Correct Ans-Condenser, Evaporator
,After recovering refrigerant from a sealed system, which of the following gas is used to
pressurize (for leak checking) or blow debris out of the system:
Hydrogen
Carbon dioxide
Oxygen
Nitrogen gas -Correct Ans-Nitrogen gas
Which one of the following has highest Ozone Depletion Potential (ODP):
HCFC
All will have same ODP
CFC
HFC -Correct Ans-CFC
The ____connects the evaporator to the compressor in a refrigerant system:
Suction Line
Evaporation Line
Discharge Line
Liquid Line -Correct Ans-Suction Line
A violation of the Clean Air Act, including improper record keeping, is subject to a
penalty of a fine of up to _____ per day per violation:
$37,500
$40,000
$24,000
$35,000 -Correct Ans-$37,500
,At which of the following stage in refrigeration cycle does the refrigerant changes from
high-pressure vapor to a high-pressure liquid:
Evaporator
Condenser
Compressor
Expansion valve -Correct Ans-Condenser
Which of the following is not most effective way to detect the general area of a small
leaks:
fluorescent Indicator
Ultrasonic tester
All the options are correct
Electronic tester -Correct Ans-fluorescent Indicator
During each vacuum decay test, it is observed that after creating the vacuum, the
pressure of the system increases to greater than 0 psig and stops at some point, Then:
Leak could not be observed
Leak is observed but not refrigerant is trapped
None of the answers are correct
The refrigerant could be trapped in the system -Correct Ans-The refrigerant could be
trapped in the system
Refrigerant cannot be called reclaimed unless it meets the ______ purity standard:
ARI-700
ARI-740
ARI-360
, ARI-1024 -Correct Ans-ARI-700
One chlorine atom in stratosphere can be able to destroy approximately _______
number of ozone molecules:
100,000
10,000
1000
100 -Correct Ans-100,000
It is to be ensured that the refrigerant recovery cylinder is not filled to more than _____
of its capacity
90 percent
60 percent
50 percent
80 percent -Correct Ans-80 percent
Only _____ refrigerant can be transferred or sold to another individual
Disposed
Reclaimed
Recovered
Recycled -Correct Ans-Reclaimed
Lifetime of CFCs is believed to be in the range ______ :
Above 1000 years
5 to 10 years
