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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 three ways a motor can fail electrically?






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






3. Superheat should never be below how many degrees






4. How is ACR tubing sized?






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






6. At what temperature will brazing melt?






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






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






9. How will too much refrigerant effect superheat?






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






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






12. At what temperature will brazing melt?






13. The fan switch closes at what temperature?






14. What type of air conditioning system must be charged using the superheat method?






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






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






17. Do you need a vent on a push-through evaporator?






18. How are round ducts supported?

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19. How many amps can 12 g wire handle?






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






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






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






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






24. How many amps can 14 g wire handle?






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






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






27. Where do you check the amps on a motor?






28. How many amps can 8 g wire handle?






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






30. How do you calculate cfm?

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31. How do you achieve high-efficiency?






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






33. What is lined duct?






34. What is lined duct?






35. How many amps can 12 g wire handle?






36. In what state is the refrigerant in the compressor?






37. How is insulation around a duct rated?






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






39. What kind of refrigeratnts must be added in liquid form?






40. 7' round duct has a ballpark cfm of what?






41. How do you calculate ballpark superheat?






42. What is considered normal operating conditions?






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






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






45. On what terminal do you check amperage?






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






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






48. What are the two types of package units?






49. The fan switch opens at what temperature?






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






Can you answer 50 questions in 15 minutes?



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