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. Square sheet metal duct is normally fabricated in a sheet metal shop and assembled in the field. (True or False)






2. Pressure in ductwork is measured In what?






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






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






5. Superheat should never be below how many degrees






6. How do you calculate LRA?






7. When do you install an auxillary drain pan?






8. How do you calculate ballpark superheat?






9. What is lined duct?






10. How are round ducts connected to one another?






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






12. What is a package unit?






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






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






15. On what terminal do you check amperage?






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






17. The furnace size is calculated by what?






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






19. What is the normal evaporator temperature?






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






21. Why is it necessary to have multiple refrigerant circuits in some evaporator coils?






22. How many BTU's per ton?






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






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






25. Square sheet metal duct is normally fabricated in a sheet metal shop and assembled in the field. (True or False)






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






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






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






29. 9' round duct has a ballpark cfm of what?






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






31. How do you calculate EER?






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






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






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






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






36. Where do you apply flux when soldering?






37. How is ACR tubing sized?






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






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






40. The furnace size is calculated by what?






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






42. Do you need a trap on a pull-through evaporator?






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






44. Pressure in ductwork is measured In what?






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






46. How many cfm per ton?






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






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






49. How is flexible duct supported?






50. 9' round duct has a ballpark cfm of what?