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 is considered normal operating conditions?






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






3. Pressure in ductwork is measured In what?






4. Why are some ACR tubing lines insulated?






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






6. What gauge is thermostat wire?






7. How many cfm per ton?






8. How is nominal-sized tubing sized?






9. How many amps can 8 g wire handle?






10. What is lined duct?






11. How many amps can 10 g wire handle?






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






13. What are the two types of package units?






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






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






16. The refrigerant within the evaporator will typically boil at what temperature when it is 75 degrees inside with a relative humidity of 50%?






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






18. On what terminal do you check amperage?






19. Superheat should never be below how many degrees






20. 6' round duct has a ballpark cfm of what?






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






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






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






24. How many amps can 10 g wire handle?






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






26. What are the two types of blower drives?






27. What distributes supply air to a room in a structure?






28. What is lined duct?






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






30. What do you use to check for leaks?






31. How many BTU's per ton?






32. Can refrigerant line sets be altered in length?






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






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






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






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






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






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






39. Most duct insulation is made of what?






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






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






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






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

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44. When do you install an auxillary drain pan?






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






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






47. The fan switch opens at what temperature?






48. How are round ducts supported?

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49. The refrigerant within the evaporator will typically boil at what temperature when it is 75 degrees inside with a relative humidity of 50%?






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