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






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






3. At what temperature will brazing melt?






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






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






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






7. Multiple-zone systems often use what to alleviate the problem of excess air when only some zones are calling for conditioning?






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






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






10. What gauge is thermostat wire?






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






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






13. How do you achieve high-efficiency?






14. What are the three pressures created by moving air in ductwork?






15. What is considered normal operating conditions?






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






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






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






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






20. What are the two types of blower drives?






21. Where do you apply flux when soldering?






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






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






24. What kind of metering device do high-efficiency units usually use?






25. The furnace size is calculated by what?






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






27. How are round ducts supported?

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






29. Can refrigerant line sets be altered in length?






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






31. What are the three pressures created by moving air in ductwork?






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






33. At what temperature does refrigerant condense in a high-efficiency unit?






34. What is lined duct?






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






36. What is a package unit?






37. How is insulation around a duct rated?






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






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






40. 10' round duct has a ballpark cfm of what?






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






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






43. 6' round duct has a ballpark cfm of what?






44. The fan switch opens at what temperature?






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






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






47. At what temperature will brazing melt?






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






49. Where do you apply flux when soldering?






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







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