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






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






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






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






5. How many amps can 10 g wire handle?






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






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






8. How is nominal-sized tubing sized?






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






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

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11. What are the two types of blower drives?






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






13. The fan switch closes at what temperature?






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






15. 9' round duct has a ballpark cfm of what?






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






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






18. How many amps can 14 g wire handle?






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






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






21. What sort of pressure will a push-through evaporator have?






22. Where do you apply flux when soldering?






23. 8' round duct has a ballpark cfm of what?






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






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






26. How is flexible duct supported?






27. Where is insulation used on copper tubing used for air-conditioning?






28. What do you use to check for leaks?






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






30. Where do you apply flux when soldering?






31. How are high-efficiency condenser coils different from standard-efficiency condenser coils?






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






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






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

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35. What gauge is thermostat wire?






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






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






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






39. What is considered normal operating conditions?






40. Can refrigerant line sets be altered in length?






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






42. 6' round duct has a ballpark cfm of what?






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






44. 10 SEER is classified as what kind of efficiency?






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






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






47. What is the normal evaporator temperature?






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






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






50. 7' round duct has a ballpark cfm of what?