NEIEP 500 FINAL COMPREHENSIVE
EXAMINATION TEST SOLVED QUESTIONS
AND ANSWERS GRADED A+
⩥ Ultraviolet radiation.
Answer: _____ breaks down the CFCs and frees the chlorine ion
at stratosphere:
⩥ More difficult.
If large vacuum pump is used, vacuum in the system drops very
fast causing the evaporating water to cool and freeze rapidly.
This results in removing water from the system more difficult..
Answer: If the vacuum pump used is too large, water removal
from the system will become easier or more difficult?
⩥ 609.
Answer: Motor Vehicle Air Conditioning (MVAC) service
technicians are governed under EPA _____ section:
⩥ True
,Ozone at stratosphere is an unstable molecule made up of three
oxygen atoms. The instability of the molecule allows the free
oxygen atoms to react with hydrogen, nitrogen, chlorine and
bromine..
Answer: Ozone is a unstable molecule at stratosphere: T or F?
⩥ Hydrogen
Chlorine and Bromine are considered as the elements
responsible for the depletion of ozone layer at stratosphere. CFC
compound are highly stable at lower atmosphere and have
higher lifetime. Therefore they reach stratosphere and depletes
the ozone layer. Presence of Hydrogen element in organic
refrigerants such as HCFCs and HFCs results in decomposition
at lower atmosphere. Therefore these elements have lower
lifetime and cannot pose threat to ozone depletion..
Answer: Presence of which of the following elements will
reduce the stability of the ozone depletion organic refrigerant
compounds:
Chlorine
Bromine
Hydrogen
, All of the Above
⩥ Pressure-Temperature method
Saturated refrigerants have a specific pressure rating at a
specific temperature. If both these parameters are measured,
correct refrigerant can be determined by looking at pressure-
temperature chart.
Answer: If the label identifying the refrigerant is missing, then
which method is used to identify the type of refrigerant?
⩥ Temperature.
Answer: References to the pressure/temperature chart for
determining the type of refrigerant are only valid if the _____ is
known:
⩥ HFC.
Answer: Sale of which of the following refrigerants are not
limited to technicians:
HCFC
HFC
CFC
EXAMINATION TEST SOLVED QUESTIONS
AND ANSWERS GRADED A+
⩥ Ultraviolet radiation.
Answer: _____ breaks down the CFCs and frees the chlorine ion
at stratosphere:
⩥ More difficult.
If large vacuum pump is used, vacuum in the system drops very
fast causing the evaporating water to cool and freeze rapidly.
This results in removing water from the system more difficult..
Answer: If the vacuum pump used is too large, water removal
from the system will become easier or more difficult?
⩥ 609.
Answer: Motor Vehicle Air Conditioning (MVAC) service
technicians are governed under EPA _____ section:
⩥ True
,Ozone at stratosphere is an unstable molecule made up of three
oxygen atoms. The instability of the molecule allows the free
oxygen atoms to react with hydrogen, nitrogen, chlorine and
bromine..
Answer: Ozone is a unstable molecule at stratosphere: T or F?
⩥ Hydrogen
Chlorine and Bromine are considered as the elements
responsible for the depletion of ozone layer at stratosphere. CFC
compound are highly stable at lower atmosphere and have
higher lifetime. Therefore they reach stratosphere and depletes
the ozone layer. Presence of Hydrogen element in organic
refrigerants such as HCFCs and HFCs results in decomposition
at lower atmosphere. Therefore these elements have lower
lifetime and cannot pose threat to ozone depletion..
Answer: Presence of which of the following elements will
reduce the stability of the ozone depletion organic refrigerant
compounds:
Chlorine
Bromine
Hydrogen
, All of the Above
⩥ Pressure-Temperature method
Saturated refrigerants have a specific pressure rating at a
specific temperature. If both these parameters are measured,
correct refrigerant can be determined by looking at pressure-
temperature chart.
Answer: If the label identifying the refrigerant is missing, then
which method is used to identify the type of refrigerant?
⩥ Temperature.
Answer: References to the pressure/temperature chart for
determining the type of refrigerant are only valid if the _____ is
known:
⩥ HFC.
Answer: Sale of which of the following refrigerants are not
limited to technicians:
HCFC
HFC
CFC
