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 are the two types of package units?






2. What are the two ways that fresh air enters a structure?






3. Why are some ACR tubing lines insulated?






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






5. What are the two types of package units?






6. What standard weight copper tubing is most often used in the heating and air-conditioning industry?






7. How many amps can 12 g wire handle?






8. At what temperature will soft solder melt?






9. How is insulation around a duct rated?






10. What percentage silver do you use to braze two dissimilar metals such as steel and copper?






11. What distributes supply air to a room in a structure?






12. Where is insulation used on copper tubing used for air-conditioning?






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






14. Sections of duct board can be fastened together with what?






15. At what temperature does refrigerant condense in a high-efficiency unit?






16. How are the condenser coils different on a high-efficiency unit?






17. 6' round duct has a ballpark cfm of what?






18. 9' round duct has a ballpark cfm of what?






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






20. Sections of duct board can be fastened together with what?






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






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






23. What is a package unit?






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






25. How are round ducts connected to one another?






26. 10 SEER is classified as what kind of efficiency?






27. How do you achieve high-efficiency?






28. How many amps can 10 g wire handle?






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






30. Does a package unit come from the factory pre-charged?






31. The fan switch closes at what temperature?






32. What are the four materials used to make duct?






33. At what temperature does refrigerant condense in a high-efficiency unit?






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






35. How are the high pressure switch and the low pressure switch wired with the compressor contactor?






36. What is the name of the fitting where the branch line leaves the duct?






37. What gauge is thermostat wire?






38. The crankcase heater on an air-conditioning compressor is used to what?






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






40. How many amps can 14 g wire handle?






41. How much does a drain line need to drop per foot of length?

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42. Where do you apply flux when soldering?






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






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






45. Superheat should never be below how many degrees






46. Most duct insulation is made of what?






47. If the rpm's are 3450 - how many poles does the motor have?






48. If the rpm's are 1750 - how many poles does the motor have?






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






50. How many amps can 8 g wire handle?