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 many amps can 8 g wire handle?






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






3. Do you need a vent on a pull-through evaporator?






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






5. How many BTU's per ton?






6. 10 SEER is classified as what kind of efficiency?






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






8. The fan switch opens at what temperature?






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






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






11. How is ACR tubing sized?






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






13. How is flexible duct supported?






14. What gauge is thermostat wire?






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






16. How do you calculate ballpark superheat?






17. What is considered normal operating conditions?






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






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






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






21. Where do you apply flux when soldering?






22. 9' round duct has a ballpark cfm of what?






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






24. 10' round duct has a ballpark cfm of what?






25. At what temperature will brazing melt?






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






27. 6' round duct has a ballpark cfm of what?






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






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






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






31. How many amps can 10 g wire handle?






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






33. The furnace size is calculated by what?






34. How do you calculate EER?






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






36. What is the difference between SEER and EER?






37. How are round ducts supported?

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38. 13 SEER is classified as what kind of efficiency?






39. At what temperature will soft solder melt?






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






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






42. How will too much refrigerant effect subcooling?






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






44. How do you achieve high-efficiency?






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






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






47. What are the two types of blower drives?






48. 7' round duct has a ballpark cfm of what?






49. What is the typical temperature difference between a standard-efficiency condenser and the ambient temperature?






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