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 distributes supply air to a room in a structure?






2. In what length rolls is soft copper tubing normally available?






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






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






5. How many amps can 8 g wire handle?






6. 13 SEER is classified as what kind of efficiency?






7. What are the three crafts normally associated with an air-conditioned installation?






8. What are the two functions of the air-conditioning system?






9. What do you use to check for leaks?






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






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






12. The fan switch closes at what temperature?






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






14. What is it called when liquid refrigerant gets into the compressor?






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






16. Why are some ACR tubing lines insulated?






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






18. What are the two types of return air systems in residential installations?






19. 7' round duct has a ballpark cfm of what?






20. Most duct insulation is made of what?






21. How will too much refrigerant effect subcooling?






22. How many amps can 10 g wire handle?






23. At what temperature will brazing melt?






24. In what length rolls is soft copper tubing normally available?






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






26. How is flexible duct supported?






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






28. How is flexible duct supported?






29. How many cfm per ton?






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






31. Why are some ACR tubing lines insulated?






32. What are normal conditions - as defined by the ARI.






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






34. If the suction pressure rises - what happens to the head pressure?






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






36. At what temperature will soft solder melt?






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






38. How do you calculate ballpark superheat?






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






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






41. What sort of pressure will a push-through evaporator have?






42. If the rpm's are 750 - how many poles does the motor have?






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






44. Where do you install a trap on a drain line?






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






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






47. What percentage silver do you need to use for an are-410 system?






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






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






50. What are the two basic duct connection configurations for package units supply and return air ducts?