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 blower drives?






2. If pressure rises - what happens to the superheat?






3. How will too much refrigerant effect superheat?






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






5. What do you do after you braze a system?






6. When must a copper joint never be soldered or brazed?






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






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






9. The fan switch closes at what temperature?






10. What is the range for normal superheat and subcooling?






11. What do you use to check for leaks?






12. At what temperature will brazing melt?






13. What is lined duct?






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






15. What are the two types of package units?






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






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






18. How many amps can 10 g wire handle?






19. 9' round duct has a ballpark cfm of what?






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






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






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






23. At what temperature will brazing melt?






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






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






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






27. How is flexible duct supported?






28. How is ACR tubing sized?






29. When do you install an auxillary drain pan?






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






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






32. What is lined duct?






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






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






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






36. 10' round duct has a ballpark cfm of what?






37. 10 SEER is classified as what kind of efficiency?






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






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






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






41. Which type of wire can handle a higher ampacity?






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






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






44. How many amps can 14 g wire handle?






45. How do you calculate the area of a circle?






46. Pressure in ductwork is measured In what?






47. What are the two types of package units?






48. Can refrigerant line sets be altered in length?






49. What are the three ways a motor can fail electrically?






50. What are the two types of blower drives?