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 normal conditions - as defined by the ARI.






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






3. How many amps can 8 g wire handle?






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






5. What can cause a decrease in suction pressure on an air-conditioning system?






6. Pressure in ductwork is measured In what?






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






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






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






10. How is insulation around a duct rated?






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






12. Does a package unit come from the factory pre-charged?






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






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






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






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






17. Where do you apply flux when soldering?






18. A reciprocating compressor has what sort of moving parts?






19. What are the two types of blower drives?






20. How is nominal-sized tubing sized?






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






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






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






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






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






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






27. How do you calculate ballpark superheat?






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






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






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






31. How is flexible duct supported?






32. 8' round duct has a ballpark cfm of what?






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






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






35. How many BTU's per ton?






36. How is insulation around a duct rated?






37. What is a package unit?






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






39. 10 SEER is classified as what kind of efficiency?






40. What is lined duct?






41. What is it called when liquid refrigerant gets into the compressor?






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






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






44. 10' round duct has a ballpark cfm of what?






45. How many amps can 14 g wire handle?






46. How many amps can 14 g wire handle?






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






48. What are the three major power-consuming devices on an air-conditioning system?






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






50. Most duct insulation is made of what?