CLC 059 REVIEW SHEET LATEST
QUESTIONS AND SOLUTIONS GRADED A+
⩥ Ammonia..
Answer: Nitrogen reacts with hydrogen to form what?
⩥ Liquid line.
Answer: The ______ connects the condenser to the expansion device:
⩥ Nov 15, 1993.
Answer: Recovery and recycling equipment intended for use
manufactured after _____ must be certified to meet the requirements of
ARI 740.
⩥ Electronic leak detector
Electronic leak detector works on the principle that when halogen vapor
is heated, it increases the positive ion concentration thereby increasing
the conductivity of the air sample drawn between the ion emitter and
collector (anode and cathode). This increase in positive ion conductivity
is magnified using electrical circuit so that audio or visual signal is
produced..
Answer: Which type of leak detector works by drawing the vapor into
the system and heating it?
,⩥ 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.
QUESTIONS AND SOLUTIONS GRADED A+
⩥ Ammonia..
Answer: Nitrogen reacts with hydrogen to form what?
⩥ Liquid line.
Answer: The ______ connects the condenser to the expansion device:
⩥ Nov 15, 1993.
Answer: Recovery and recycling equipment intended for use
manufactured after _____ must be certified to meet the requirements of
ARI 740.
⩥ Electronic leak detector
Electronic leak detector works on the principle that when halogen vapor
is heated, it increases the positive ion concentration thereby increasing
the conductivity of the air sample drawn between the ion emitter and
collector (anode and cathode). This increase in positive ion conductivity
is magnified using electrical circuit so that audio or visual signal is
produced..
Answer: Which type of leak detector works by drawing the vapor into
the system and heating it?
,⩥ 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.
