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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. How are round ducts supported?

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2. How many cfm per ton?






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






4. What are the two types of blower drives?






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






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






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






8. How is flexible duct supported?






9. The fan switch opens at what temperature?






10. How do you calculate EER?






11. How do you calculate EER?






12. How many amps can 10 g wire handle?






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






14. Superheat should never be below how many degrees






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






16. The furnace size is calculated by what?






17. What are the three major power-consuming devices on an air-conditioning system?






18. How many amps can 14 g wire handle?






19. The fan switch closes at what temperature?






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






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






22. The crankcase heater on an air-conditioning compressor is used to what?






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






24. How will too much refrigerant effect superheat?






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






26. How does ACR copper pipe come?






27. 6' round duct has a ballpark cfm of what?






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






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






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






31. The furnace size is calculated by what?






32. The refrigerant within the evaporator will typically boil at what temperature when it is 75 degrees inside with a relative humidity of 50%?






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






34. How are round ducts connected to one another?






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






36. How are round ducts supported?

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






38. How do you calculate cfm?

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






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






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






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






43. How does ACR copper pipe come?






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






45. How do you achieve high-efficiency?






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






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






48. The refrigerant within the evaporator will typically boil at what temperature when it is 75 degrees inside with a relative humidity of 50%?






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






50. How is nominal-sized tubing sized?







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