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 gauge is thermostat wire?






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






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






4. How many amps can 10 g wire handle?






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






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






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






8. What are normal conditions - as defined by the ARI.






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






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






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






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






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






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






15. What do you use to connect square and rectangular ductboard together?






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






17. On what terminal do you check amperage?






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






19. 6' round duct has a ballpark cfm of what?






20. What do you use to check for leaks?






21. How do you calculate cfm?

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22. What do you use to check for leaks?






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






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






25. What is the difference between SEER and EER?






26. The furnace size is calculated by what?






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






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






29. The fan switch closes at what temperature?






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






31. How is nominal-sized tubing sized?






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






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






34. What gauge is thermostat wire?






35. When must a copper joint never be soldered or brazed?






36. What is lined duct?






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






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






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






40. How is insulation around a duct rated?






41. How are round ducts supported?

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42. What percentage silver do you need to use for an are-410 system?






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






44. What tool is used to expand the diameter of soft copper tubing






45. The fan switch opens at what temperature?






46. What is the difference between SEER and EER?






47. If the suction pressure rises - what happens to the head pressure?






48. How is nominal-sized tubing sized?






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






50. 7' round duct has a ballpark cfm of what?







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