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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 the two types of blower drives?






2. How do you calculate EER?






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






4. What is a package unit?






5. How will an overcharge affect an air-conditioning system with a fixed-orifice type metering device?






6. What kind of copper tubing is used for plumbing and heating applications?






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






8. Why are some ACR tubing lines insulated?






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






10. On what terminal do you check amperage?






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






12. 13 SEER is classified as what kind of efficiency?






13. How is flexible duct supported?






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






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






16. If pressure rises - what happens to the superheat?






17. 6' round duct has a ballpark cfm of what?






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






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






20. When do you install an auxillary drain pan?






21. At what temperature will soft solder melt?






22. When do you install an auxillary drain pan?






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






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






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






26. How many amps can 8 g wire handle?






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






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






29. Can refrigerant line sets be altered in length?






30. How is insulation around a duct rated?






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






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






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






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






35. Which is more efficient - a TXV or a fixed-orifice metering device?






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






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






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






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






40. The fan switch opens at what temperature?






41. What are the two types of blower drives?






42. How many cfm per ton?






43. 8' round duct has a ballpark cfm of what?






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






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






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






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






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






49. What are the three ways a motor can fail electrically?






50. How does ACR copper pipe come?







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