Test your basic knowledge |

Residential Air Conditioning

Subjects : engineering, nate
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What component changes refrigerant from a low pressure gas to a high pressure gas?






2. How many amps can 8 g wire handle?






3. 10' round duct has a ballpark cfm of what?






4. When do you install a trap on a drain line?






5. Do you need a trap on a pull-through evaporator?






6. How is the high pressure switch wired with the low pressure switch?






7. What is the typical temperature difference between a high-efficiency condenser and the ambient temperature?






8. When do you install a trap on a drain line?






9. What is the design boiling point for most evaporator coils in residential air conditioning?






10. What are the three major power-consuming devices on an air-conditioning system?






11. The fan switch closes at what temperature?






12. What are the components of a hard-start kit?






13. How does ACR copper pipe come?






14. How do you calculate EER?






15. Why are some ACR tubing lines insulated?






16. What gauge is thermostat wire?






17. Multiple-zone systems often use what to alleviate the problem of excess air when only some zones are calling for conditioning?






18. At what temperature will brazing melt?






19. How much superheat do you need to prevent liquid refrigerant from entering the compressor?






20. How many amps can 12 g wire handle?






21. What are the three pressures created by moving air in ductwork?






22. The evaporator is designed to remove what two types of heat?






23. The fan switch closes at what temperature?






24. What tool is used to expand the diameter of soft copper tubing






25. Do you need a vent on a pull-through evaporator?






26. The load on the evaporater will effect which pressure?






27. Why is it necessary to have multiple refrigerant circuits in some evaporator coils?






28. How long should you leave a system off once you kill power before restarting it?






29. What sort of pressure will a pull-through evaporator have?






30. At what temperature does refrigerant condense in a standard-efficiency unit?






31. What component changes refrigerant from a low pressure gas to a high pressure gas?






32. What is used to measure static air pressure in ducts.






33. How are round ducts supported?

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34. Will a dirty condenser cause a rise or fall in pressure?






35. How many amps can 10 g wire handle?






36. What are the components of a hard-start kit?






37. The A/C size is calculated by what?






38. When do you install an auxillary drain pan?






39. What kind of copper tubing is used for plumbing and heating applications?






40. 6' round duct has a ballpark cfm of what?






41. How are high-efficiency condenser coils different from standard-efficiency condenser coils?






42. 10' round duct has a ballpark cfm of what?






43. What can cause a decrease in suction pressure on an air-conditioning system?






44. What kind of copper tubing is used for refrigeration or air-conditioning applications?






45. Do you need a trap on a push-through evaporator?






46. How is ACR tubing sized?






47. What is lined duct?






48. At what temperature will soft solder melt?






49. How do you achieve high-efficiency?






50. The compressor is cooled by liquid refrigerant. (True of False)