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- 1. Multiple Choice
Which of the following is not a type of heat transfer?
conduction
convection
fusion
radiation
- 2. Multiple Choice
Removing the refrigerant from a system is called_________.
evacuation
recovery
recycle
purging
- 3. Multiple Choice
Which of the following is a law of physics from the power point used in class?
pressure and temperature are directly related
temperature and heat are directly related
boiling point of water is 212 degrees
change of state from a liquid to a gas is condensation
- 4. Multiple Choice
Changing state from a liquid to a gas is_______.
condensation
evaporation
evacuation
thermalization
- 5. Multiple Choice
A vacuum pump is used for all the following EXCEPT?
evacuation
leak testing
recovery
charging
- 6. Multiple Choice
The __________ takes the system pressure from low to high.
compressor
evaporator
TXV
FOT
- 7. Multiple Choice
The _______ takes the system pressure from high to low.
compressor
evaporator
condenser
TXV
- 8. Multiple Choice
The _______ takes the system pressure from high to low.
evaporator
FOT
condenser
compressor
- 9. Multiple Choice
When the system is operating properly, all of the following components will have a drastic temperature change across them EXCEPT?
evaporator
compressor
TXV
FOT
- 10. Multiple Choice
Latent heat of vaporization occurs in the ___________.
evaporator
condenser
compressor
thermalizer
- 11. Multiple Choice
Latent heat of condensation occurs in the_________.
evaporator
condenser
compressor
TXV
- 12. Multiple Choice
Another name for evacuation is _________.
vacuum
recover
recycle
charge
- 13. Multiple Choice
Which of the following devices should NOT change the pressure of the refrigerant?
evaporator
compressor
TXV
FOT
- 14. Multiple Choice
Which of the following devices would have a low inlet temperature and a high outlet temperature?
compressor
FOT
TXV
evaporator
- 15. Multiple Choice
Vacuum is measured in____________.
in Hg
in Mr
in Mc
in Hc
- 16. Multiple Choice
Refrigerant can be evaluated for contamination using a gauge, thermometer, and ________________.
a P/T chart
a T/P chart
a M/P chart
a H/G chart
- 17. Multiple Choice
The number one R134a system contaminant encountered in the transportation industry is ________.
air
moisture
substitute refrigerants
dirt
- 18. Multiple Choice
Air contamination in an A/C machine is usually caused by ___________.
operator error
leaks in the system
leaks in the machine
poor quality refrigerant
- 19. Multiple Choice
Which of the following devices causes a change in state?
condenser
FOT
compressor
TXV
- 20. Multiple Choice
Ram air effects the _____________ in the transportation refrigeration system.
condenser
evaporator
compressor
accumulator
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