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 furnace size is calculated by what?






2. What is the normal evaporator temperature?






3. Can refrigerant line sets be altered in length?






4. How many amps can 14 g wire handle?






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






6. How do you calculate cfm?

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






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






9. How many amps can 8 g wire handle?






10. Pressure in ductwork is measured In what?






11. What are the two types of blower drives?






12. What is lined duct?






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






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






15. How many amps can 12 g wire handle?






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






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






18. How do you calculate ballpark superheat?






19. Where do you apply flux when soldering?






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






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






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






23. At what temperature will soft solder melt?






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






25. What gauge is thermostat wire?






26. What component changes refrigerant from a low pressure gas to a high pressure gas?






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






28. What type of air conditioning system must be charged using the superheat method?






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






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






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






32. What distributes supply air to a room in a structure?






33. 10 SEER is classified as what kind of efficiency?






34. What is the normal evaporator temperature?






35. How will too much refrigerant effect superheat?






36. How many cfm per ton?






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






38. What are the two types of return air systems in residential installations?






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






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






41. What is the typical temperature difference between a high-efficiency condenser and the ambient temperature?






42. 10 SEER is classified as what kind of efficiency?






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






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






45. Superheat should never be below how many degrees






46. What is a package unit?






47. Most duct insulation is made of what?






48. How will too much refrigerant effect subcooling?






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






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