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. How are round ducts connected to one another?






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






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






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






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






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






7. 10 SEER is classified as what kind of efficiency?






8. When do you install an auxillary drain pan?






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






10. The fan switch opens at what temperature?






11. The furnace size is calculated by what?






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






13. At what temperature will brazing melt?






14. What are the two types of package units?






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






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






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






18. 13 SEER is classified as what kind of efficiency?






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






20. How will too much refrigerant effect subcooling?






21. The fan switch closes at what temperature?






22. What is the typical pressure differance across a TXV?






23. What is the normal evaporator temperature?






24. How will too much refrigerant effect superheat?






25. If the rpm's are 1050 - how many poles does the motor have?






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






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






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






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






30. How many amps can 10 g wire handle?






31. How do you calculate ballpark superheat?






32. What is the difference between SEER and EER?






33. How does ACR copper pipe come?






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






35. 10 SEER is classified as what kind of efficiency?






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






37. How do you calculate LRA?






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






39. What kind of metering device do high-efficiency units usually use?






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






41. 9' round duct has a ballpark cfm of what?






42. The fan switch closes at what temperature?






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






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






45. How many amps can 14 g wire handle?






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






47. How many amps can 14 g wire handle?






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






49. How will too much refrigerant effect subcooling?






50. 9' round duct has a ballpark cfm of what?