EPA 608 EXAM NEWEST EXAM |
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) | GRADED A+ |
LATETS VERSION
A near azeotropic blend will contain:
Answer
One saturation pressure value
One high saturation pressure value
Two saturation pressure values that are close
Two saturation pressure values that have abig difference -
ANSWER Two saturation pressure valves that are close
A recovery device has to achieve a 4-inch vacuum in all circumstances.
Select one:
True
False - ANSWER False
A zeotropic blend will contain:
Answer
One saturation pressure value
One high saturation pressure value
Two saturation pressure values that are close
Two saturation pressure values that have a big difference -
ANSWER Two saturation pressure values that have a big difference
Access fittings:
Answer
Need to be leak tested before recoveringrefrigerant
Are used to gain access to closed systems
Are used with window AC units
All of these - ANSWER All of these
After being phased out, where can technicians obtain refrigerant to service equipment
that contains that refrigerant? - ANSWER From
recovered and reclaimed refrigerant.
After refrigerant is phased out, can a technician still service the equipment containing
that refrigerant? - ANSWER YES
Alkylbenzene (AB) oil is used for systems with which of the following refrigerants?
(Select all that apply)
Answer
,A. CFC
B. HCFC
C. HCFC blends
D. HFC - ANSWER A, B, and C
All recovery devices need to be tested at a place called
AHRI Standard 740.
Select one:
True
False - ANSWER False
Ammonia is safe to use because it is a natural refrigerant.
Select one:
True
False - ANSWER False
An active recovery machine is required for all systems.
Passive recovery is a thing of the past.
Select one:
True
False - ANSWER False
An ideal oil is best at handling only high temperatures and high pressures.
Select one:
True
False - ANSWER False
An ideal oil is readily miscible with the refrigerant in the system.
Select one:
True
False - ANSWER True
As environmental technicians, we must be up to date with which type of laws? -
ANSWER Federal, State, and Local Laws
As the temperature of a liquid increases, what phase does it turn into? (Assume
constant pressure) - ANSWER Vapor
At high temperatures, what do CFCs and HCFCs decompose to?
Answer
Hydrochloric and hydrofluoric acids
Hydrocarbon and hydrofluorocarbons
Chloric and fluoric acids
All of these - ANSWER Hydrochloric and
hydrofluoric acids
,B2 refrigerants are more dangerous than which of the following? (Select all that apply)
Answer
A. B1
В. ВЗ
C. A1
D. A2 - ANSWER A, C, and D
B2 refrigerants are safer than which one of the following?
Answer
A. B1
В. ВЗ
C. A2
D. A3 - ANSWER B
Burning CFCs and HCFCs can:
Answer
Create toxic vapors that are harmful to inhale
Will produce phosgene gas
Result from cutting or welding pipes containing residual refrigerant
All of these - ANSWER All of these
Can refrigerant be resold? - ANSWER Yes, but
only if it has been reclaimed to AHRI Standard 700 specifications
Condensation happens when a gas or vapor cools down and becomes liquid. T or F? -
ANSWER True
Contaminated refrigerants can cause the appliance to:
Answer
Last longer
Cool less efficiently
Optimize cooling
None of these - ANSWER Cool less effectively
Defrost heaters: (Select all that apply)
Answer
Can be used to increase the temperature of refrigerant
Can be used to increase refrigerant recovery speed
Are available in all Type I appliances
None of these - ANSWER Can be used to
increase the temperature and recovery speed of refrigerant
Do natural events like volcanic eruptions contribute to chlorine in the stratosphere? -
ANSWER Yes, but are not the primary source
Do you expect to see R-22 listed as an acceptable substitute under the SNAP program.
, Select one:
True
False - ANSWER False
Do you expect to see R-404a in household refrigerators and freezers?
Select one:
True
False - ANSWER True
Do you expect to see R-407c in new household refrigerators and freezers?
Select one:
True
False - ANSWER False
Does the refrigerant change state in the compressor? -
ANSWER No, it does not change state
Equipment has to be certified to epa standards in order to recover which refrigerants -
ANSWER CFCs, HCFCs, HFCs
Equipment that uses nitrogen as a refrigerant is not subject to Section 608
requirements.
True or False - ANSWER True
For both active recovery and passive recovery, we must recover 80% of the appliance
charge if the compressor is not working.
Select one:
True
False - ANSWER True
For EPA 608 Universal Certification, how many questions will you receive? -
ANSWER 100
For R-22, there are no drop-in substitutes.
Select one:
True
False - ANSWER True
For the same substance, at the same temperature, the average speed of molecules in a
vapor is the same as the average speed of molecules in a liquid.
Select one:
True
False - ANSWER True
GWP is a measure of how much energy a gas traps in the atmosphere over 100 years
Select one: T or F - ANSWER False
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) | GRADED A+ |
LATETS VERSION
A near azeotropic blend will contain:
Answer
One saturation pressure value
One high saturation pressure value
Two saturation pressure values that are close
Two saturation pressure values that have abig difference -
ANSWER Two saturation pressure valves that are close
A recovery device has to achieve a 4-inch vacuum in all circumstances.
Select one:
True
False - ANSWER False
A zeotropic blend will contain:
Answer
One saturation pressure value
One high saturation pressure value
Two saturation pressure values that are close
Two saturation pressure values that have a big difference -
ANSWER Two saturation pressure values that have a big difference
Access fittings:
Answer
Need to be leak tested before recoveringrefrigerant
Are used to gain access to closed systems
Are used with window AC units
All of these - ANSWER All of these
After being phased out, where can technicians obtain refrigerant to service equipment
that contains that refrigerant? - ANSWER From
recovered and reclaimed refrigerant.
After refrigerant is phased out, can a technician still service the equipment containing
that refrigerant? - ANSWER YES
Alkylbenzene (AB) oil is used for systems with which of the following refrigerants?
(Select all that apply)
Answer
,A. CFC
B. HCFC
C. HCFC blends
D. HFC - ANSWER A, B, and C
All recovery devices need to be tested at a place called
AHRI Standard 740.
Select one:
True
False - ANSWER False
Ammonia is safe to use because it is a natural refrigerant.
Select one:
True
False - ANSWER False
An active recovery machine is required for all systems.
Passive recovery is a thing of the past.
Select one:
True
False - ANSWER False
An ideal oil is best at handling only high temperatures and high pressures.
Select one:
True
False - ANSWER False
An ideal oil is readily miscible with the refrigerant in the system.
Select one:
True
False - ANSWER True
As environmental technicians, we must be up to date with which type of laws? -
ANSWER Federal, State, and Local Laws
As the temperature of a liquid increases, what phase does it turn into? (Assume
constant pressure) - ANSWER Vapor
At high temperatures, what do CFCs and HCFCs decompose to?
Answer
Hydrochloric and hydrofluoric acids
Hydrocarbon and hydrofluorocarbons
Chloric and fluoric acids
All of these - ANSWER Hydrochloric and
hydrofluoric acids
,B2 refrigerants are more dangerous than which of the following? (Select all that apply)
Answer
A. B1
В. ВЗ
C. A1
D. A2 - ANSWER A, C, and D
B2 refrigerants are safer than which one of the following?
Answer
A. B1
В. ВЗ
C. A2
D. A3 - ANSWER B
Burning CFCs and HCFCs can:
Answer
Create toxic vapors that are harmful to inhale
Will produce phosgene gas
Result from cutting or welding pipes containing residual refrigerant
All of these - ANSWER All of these
Can refrigerant be resold? - ANSWER Yes, but
only if it has been reclaimed to AHRI Standard 700 specifications
Condensation happens when a gas or vapor cools down and becomes liquid. T or F? -
ANSWER True
Contaminated refrigerants can cause the appliance to:
Answer
Last longer
Cool less efficiently
Optimize cooling
None of these - ANSWER Cool less effectively
Defrost heaters: (Select all that apply)
Answer
Can be used to increase the temperature of refrigerant
Can be used to increase refrigerant recovery speed
Are available in all Type I appliances
None of these - ANSWER Can be used to
increase the temperature and recovery speed of refrigerant
Do natural events like volcanic eruptions contribute to chlorine in the stratosphere? -
ANSWER Yes, but are not the primary source
Do you expect to see R-22 listed as an acceptable substitute under the SNAP program.
, Select one:
True
False - ANSWER False
Do you expect to see R-404a in household refrigerators and freezers?
Select one:
True
False - ANSWER True
Do you expect to see R-407c in new household refrigerators and freezers?
Select one:
True
False - ANSWER False
Does the refrigerant change state in the compressor? -
ANSWER No, it does not change state
Equipment has to be certified to epa standards in order to recover which refrigerants -
ANSWER CFCs, HCFCs, HFCs
Equipment that uses nitrogen as a refrigerant is not subject to Section 608
requirements.
True or False - ANSWER True
For both active recovery and passive recovery, we must recover 80% of the appliance
charge if the compressor is not working.
Select one:
True
False - ANSWER True
For EPA 608 Universal Certification, how many questions will you receive? -
ANSWER 100
For R-22, there are no drop-in substitutes.
Select one:
True
False - ANSWER True
For the same substance, at the same temperature, the average speed of molecules in a
vapor is the same as the average speed of molecules in a liquid.
Select one:
True
False - ANSWER True
GWP is a measure of how much energy a gas traps in the atmosphere over 100 years
Select one: T or F - ANSWER False
