6.
Answer A is correct. A leak in an A/C hose is usually indicated by an oily spot on the hose.
Answer B is wrong. When oil is lost in a system or a part has been replaced it is necessary to replace the
oil to the proper level.
Answer C is wrong. Technician A is correct.
Answer D is wrong. Technician A is correct.
Return
Answer A is correct. A leak in an A/C hose is usually indicated by an oily spot on the hose.
Answer B is wrong. When oil is lost in a system or a part has been replaced it is necessary to replace the
oil to the proper level.
Answer C is wrong. Technician A is correct.
Answer D is wrong. Technician A is correct.
Return
8.
Answer A is wrong. Mineral oil doesn't mix with 134a it is used with R-12: 134a uses PAG Polyalkaline Glycol
or Polyol Ester.
Answer B is correct. A/C oils mix with the refrigerant to lubricate the compressor, seals, o-rings etc. in the
system.
Answer C is wrong. Technician B is correct.
Answer D is wrong. Technician B is correct.
Return
Answer A is wrong. Mineral oil doesn't mix with 134a it is used with R-12: 134a uses PAG Polyalkaline Glycol
or Polyol Ester.
Answer B is correct. A/C oils mix with the refrigerant to lubricate the compressor, seals, o-rings etc. in the
system.
Answer C is wrong. Technician B is correct.
Answer D is wrong. Technician B is correct.
Return
7.
Answer A is wrong. This is an except question.
Answer B is wrong. This is an except question.
Answer C is correct. An overtightened A/C compressor belt may damage the pulley bearings.
Answer D is wrong. This is an except question.
Return
Answer A is wrong. This is an except question.
Answer B is wrong. This is an except question.
Answer C is correct. An overtightened A/C compressor belt may damage the pulley bearings.
Answer D is wrong. This is an except question.
Return
9.
Answer A is wrong. A frozen point on an A/C component or connection indicates a restriction in the system.
Answer B is wrong. A frozen expansion valve will cause a low-low side pressure.
Answer C is correct. Both technicians are correct.
Answer D is wrong. Both technicians are correct.
Return
Answer A is wrong. A frozen point on an A/C component or connection indicates a restriction in the system.
Answer B is wrong. A frozen expansion valve will cause a low-low side pressure.
Answer C is correct. Both technicians are correct.
Answer D is wrong. Both technicians are correct.
Return
10.
Answer A is wrong. The temperature cycling clutch switch uses a bulb placed on the outlet port of the
evaporator core.
Answer B is correct. A typical pressure cycling switch is located on the accumulator or the low side of a
system.
Answer C is wrong. Technician B is correct.
Answer D is wrong. Technician B is correct.
Return
Answer A is wrong. The temperature cycling clutch switch uses a bulb placed on the outlet port of the
evaporator core.
Answer B is correct. A typical pressure cycling switch is located on the accumulator or the low side of a
system.
Answer C is wrong. Technician B is correct.
Answer D is wrong. Technician B is correct.
Return
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