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 three crafts normally associated with an air-conditioned installation?






2. What are the two types of package units?






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






4. Pressure in ductwork is measured In what?






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






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






7. Why are some ACR tubing lines insulated?






8. 10' round duct has a ballpark cfm of what?






9. Do you need a trap on a push-through evaporator?






10. 7' round duct has a ballpark cfm of what?






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






12. How do you calculate ballpark superheat?






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






14. How are round ducts supported?

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15. Multiple-zone systems often use what to alleviate the problem of excess air when only some zones are calling for conditioning?






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






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






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






19. How is ACR tubing sized?






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






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






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

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






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






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






26. How are round ducts connected to one another?






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






28. How many cfm per ton?






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






30. How does ACR copper pipe come?






31. How many amps can 14 g wire handle?






32. How do you achieve high-efficiency?






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






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






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






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






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






38. How many amps can 14 g wire handle?






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






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






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






42. How many cfm per ton?






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






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






45. What is the normal evaporator temperature?






46. How will too much refrigerant effect superheat?






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






48. What is the normal evaporator temperature?






49. What is a package unit?






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