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. The fan switch closes at what temperature?






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






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






4. How are round ducts supported?

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






6. 10' round duct has a ballpark cfm of what?






7. How many amps can 10 g wire handle?






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






9. 8' round duct has a ballpark cfm of what?






10. What is the normal evaporator temperature?






11. 10 SEER is classified as what kind of efficiency?






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






13. How many amps can 12 g wire handle?






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






15. Pressure in ductwork is measured In what?






16. At what temperature will brazing melt?






17. At what temperature will brazing melt?






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






19. The fan switch closes at what temperature?






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






21. How many amps can 12 g wire handle?






22. When do you install an auxillary drain pan?






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






24. The crankcase heater on an air-conditioning compressor is used to what?






25. On what terminal do you check amperage?






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






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






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






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






30. How many amps can 10 g wire handle?






31. How many amps can 14 g wire handle?






32. What is the difference between SEER and EER?






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






34. What is a package unit?






35. How will too much refrigerant effect subcooling?






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






37. The A/C size is calculated by what?






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






39. How are round ducts connected to one another?






40. At what temperature will soft solder melt?






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






42. How do you calculate EER?






43. How does ACR copper pipe come?






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






45. What is lined duct?






46. How much superheat do you need to prevent liquid refrigerant from entering the compressor?






47. Where do you apply flux when soldering?






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






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






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