EPA 608 CORE EXAM ACTUAL EXAM
Which one of the following has highest Ozone Depletion Potential (ODP): - ANSWER:
CFCs has highest Ozone Depletion Potential because of the presence of chlorine
element which reacts with ozone at stratosphere
Lifetime of CFCs is believed to be in the range ______ : - ANSWER: 20 to 100 years
The ____connects the evaporator to the compressor in a refrigerant system: -
ANSWER: Suction Line
Halons were completely phased out by ______ : - ANSWER: 1994
Which of the following substance present in refrigerant appliance results in
corrosion: - ANSWER: Acidic
Refrigerant cannot be called reclaimed unless it meets the ______ purity standard: -
ANSWER: ARI-700
TXV valve maintaining the pressure difference between _____ and _____ of the
system - ANSWER: Condenser, Evaporator
Which of the following is not most effective way to detect the general area of a small
leaks: - ANSWER: fluorescent Indicator
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: - ANSWER:
Nitrogen gas
A recovery cylinder can maximum store _____ number of refrigerants: - ANSWER:
One
One chlorine atom in stratosphere can able to destroy approximately _______
number of ozone molecules: - ANSWER: 1,00,000
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: - ANSWER: The refrigerant could be trapped in the system
At which of the following stage in refrigeration cycle does the refrigerant changes
from high-pressure vapor to a high-pressure liquid: - ANSWER: Condenser
EPA has divided refrigerated appliances into _____ groups - ANSWER: Five
It is to be ensured that the refrigerant recovery cylinder is not filled to more than
_____ of its capacity - ANSWER: 80 percent
, Only _____ refrigerant can be transferred or sold to another individual - ANSWER:
Reclaimed
Recovered refrigerant is stored in which of the following painted tank: - ANSWER:
Gray with yellow top
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: - ANSWER: $37,500
A vacuum test could actually hide a leak: - ANSWER: True, a vacuum test is not the
efficient of leak detection.
If your recovery unit does not have a sub-cooling feature recovery rate will be
_____ : - ANSWER: Slower
Motor Vehicle Air Conditioning (MVAC) service technicians are governed under EPA
_____ section: - ANSWER: 609
Ozone is a unstable molecule at stratosphere: - ANSWER: True
The diameter of the liquid line must be as ______ as possible to minimize the total
refrigerant pressure drop: - ANSWER: Larger
The color of the pressure port of the manifold pressure gauge that is connected to
the low pressure side of the system: - ANSWER: Blue
This suction line filter drier should be located just upstream of the _____ inlet: -
ANSWER: Compressor
Which type of leak detector works by drawing the vapor into the system and heating
it: - ANSWER: Electronic leak detector
Recovered refrigerant if it is clean can be returned to the same system or other
systems owned by the same person without restriction: - ANSWER: True
Presence of which of the following element will reduce the stability of the ozone
depletion organic refrigerant compounds: - ANSWER: Hydrogen
The ______ connects the condenser to the expansion device: - ANSWER: Liquid line
Two refrigerants are not allowed to collect into one recovery cylinder because: -
ANSWER: Recovery back of two refrigerants from mixture is not possible
Which of the refrigerant is used in low pressure refrigerated appliance: - ANSWER:
R-123
Which one of the following has highest Ozone Depletion Potential (ODP): - ANSWER:
CFCs has highest Ozone Depletion Potential because of the presence of chlorine
element which reacts with ozone at stratosphere
Lifetime of CFCs is believed to be in the range ______ : - ANSWER: 20 to 100 years
The ____connects the evaporator to the compressor in a refrigerant system: -
ANSWER: Suction Line
Halons were completely phased out by ______ : - ANSWER: 1994
Which of the following substance present in refrigerant appliance results in
corrosion: - ANSWER: Acidic
Refrigerant cannot be called reclaimed unless it meets the ______ purity standard: -
ANSWER: ARI-700
TXV valve maintaining the pressure difference between _____ and _____ of the
system - ANSWER: Condenser, Evaporator
Which of the following is not most effective way to detect the general area of a small
leaks: - ANSWER: fluorescent Indicator
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: - ANSWER:
Nitrogen gas
A recovery cylinder can maximum store _____ number of refrigerants: - ANSWER:
One
One chlorine atom in stratosphere can able to destroy approximately _______
number of ozone molecules: - ANSWER: 1,00,000
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: - ANSWER: The refrigerant could be trapped in the system
At which of the following stage in refrigeration cycle does the refrigerant changes
from high-pressure vapor to a high-pressure liquid: - ANSWER: Condenser
EPA has divided refrigerated appliances into _____ groups - ANSWER: Five
It is to be ensured that the refrigerant recovery cylinder is not filled to more than
_____ of its capacity - ANSWER: 80 percent
, Only _____ refrigerant can be transferred or sold to another individual - ANSWER:
Reclaimed
Recovered refrigerant is stored in which of the following painted tank: - ANSWER:
Gray with yellow top
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: - ANSWER: $37,500
A vacuum test could actually hide a leak: - ANSWER: True, a vacuum test is not the
efficient of leak detection.
If your recovery unit does not have a sub-cooling feature recovery rate will be
_____ : - ANSWER: Slower
Motor Vehicle Air Conditioning (MVAC) service technicians are governed under EPA
_____ section: - ANSWER: 609
Ozone is a unstable molecule at stratosphere: - ANSWER: True
The diameter of the liquid line must be as ______ as possible to minimize the total
refrigerant pressure drop: - ANSWER: Larger
The color of the pressure port of the manifold pressure gauge that is connected to
the low pressure side of the system: - ANSWER: Blue
This suction line filter drier should be located just upstream of the _____ inlet: -
ANSWER: Compressor
Which type of leak detector works by drawing the vapor into the system and heating
it: - ANSWER: Electronic leak detector
Recovered refrigerant if it is clean can be returned to the same system or other
systems owned by the same person without restriction: - ANSWER: True
Presence of which of the following element will reduce the stability of the ozone
depletion organic refrigerant compounds: - ANSWER: Hydrogen
The ______ connects the condenser to the expansion device: - ANSWER: Liquid line
Two refrigerants are not allowed to collect into one recovery cylinder because: -
ANSWER: Recovery back of two refrigerants from mixture is not possible
Which of the refrigerant is used in low pressure refrigerated appliance: - ANSWER:
R-123
