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- 1. Multiple ChoiceIn a typical system, within which component would the evaporation of refrigerant take place?CondenserReceiver dryerEvaporatorCompressor
- 2. Multiple ChoiceWhat does MAC stand for?Mobile Air ConditioningMechanical Air ConditioningMobile Air CompressorMechanical Air Compressor
- 3. Multiple ChoiceWhere would you expect to find a high pressure liquid within an AC system?Between the compressor and the TXVBetween the TXV and the EvaporatorBetween the compressor and the condenserBetween the Condenser and the TXV
- 4. Multiple ChoiceHow would you know the air con gas has been fully recovered from the system?The gauge on the high pressure side reads a positive pressureThe gauge on the low pressure side reads a negative pressureBoth gauges read zero pressure at the end of the recovery processBoth gauges read a positive pressure of 20 Bar at the end of the recovery process
- 5. Multiple ChoiceWhich of the following would be carried out to confirm a system contained no refrigerant?Press the service port valve on the low pressure side and listen for a gas leakConnect the gauges to both high and low pressure ports to confirm a vacuum is presentConnect the Air Conditioning equipment and carry out a full recoveryConnect the gauges to both high and low pressure ports to confirm no pressure is present
- 6. Multiple ChoiceWhat type of refrigerant is R134a?CFCHCFCHSBCHFC
- 7. Multiple ChoiceWhat does COSHH stand for?Control of Substances Hazardous to healthCompany omissions of safe Health hazardsControl of solutions hazardous to healthControl of Substances which are health hazardous
- 8. Multiple ChoiceWhat does a TXV do?Cleans, dries and filters the refrigerantIt controls the quantity of refrigerant entering the evaporatorAllows for an increase in pressure and temperature prior to entering the condenserIt acts as a safety device if the compressor is over pressuring the system
- 9. Multiple ChoiceIf contamination within an air conditioning system is suspected and a flushing procedure is to be carried out what component should also be changed?CompressorReceiver DrierTXVCondenser
- 10. Multiple ChoiceWhen did it become a legal requirement to hold certification for the handling of fluorinated gas?31st August 20096th February 19984th July 201012th September 2007
- 11. Multiple ChoiceWhat are the impacts on the environment of fluorinated greenhouse gases?Contributes to the formulation of acid rainContributes to the global warmingMixes with the Nitrogen within the atmosphere to create a toxic substance, NoxHas little or no detrimental effect
- 12. Multiple ChoiceWhat does GWP stand for?Gross Warming PotentialGlobal Warming PotentialGross Warming PossibleGlobal Warming Possible
- 13. Multiple ChoiceWhat type of service ports would an R134a system generally have?Each manufacturer have their own style of port and a series of adaptors need to be usedQuick release type adaptorsSchrader Valves with a ¼ BSP ThreadSchrader Valves with 3/8 BSP Thread
- 14. Multiple ChoiceWhich of the following situations would necessitate a recovery of the refrigerant prior to continuing the task?When replacing a cylinder head gasket or an engine area jobWhen carrying out a body repair job that requires weldingWhen carrying out a paint repair that requires the use of an ovenWhen carrying out a major trim repair that involves plastic repair
- 15. Multiple ChoiceHow could you confirm the type of refrigerant present in an air conditioning system?The odour the refrigerant emits when released to atmosphereThe colour of the refrigerant which is visible through the sight glass in the top of the receiver drierBy checking the identifier label located on the vehicleIt does not matter as R12 and R134a are interchangeable
- 16. Multiple ChoiceAssuming normal atmospheric pressure at what temperature would R134a boil?-26.3 degrees C-26.3 degrees Fahrenheit-103.3 degrees C-103.3 degrees Fahrenheit
- 17. Multiple ChoiceBefore removing a major component from an air conditioning system what action must be taken?Inform all workshop staff of your actionsEnsure all workshop staff have the appropriate PPENo specific actions need to be taken above standard good practiceRecover the refrigerant from the vehicle’s system
- 18. Multiple ChoiceWhich of the following agreements would relate to December 1997MontrealK7K8Kyoto
- 19. Multiple ChoiceHow should R134a be stored to meet safety requirements?Under pressure as a vapourUnder pressure as a gasUnder no pressure as a vapourUnder no pressure as a gas
- 20. Multiple ChoiceWhen leaving the compressor what state is the refrigerant in?High Pressure, High Temperature vapourHigh Pressure, High Temperature liquidLow Pressure, low Temperature vapourLow Pressure, low Temperature vapour
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