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 distributes supply air to a room in a structure?






2. Can refrigerant line sets be altered in length?






3. When do you install an auxillary drain pan?






4. What are the two types of package units?






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






6. 10' round duct has a ballpark cfm of what?






7. What are the two types of package units?






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






9. The furnace size is calculated by what?






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






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






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






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






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






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






16. How many amps can 8 g wire handle?






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






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






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






20. What is the difference between SEER and EER?






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






22. How do you calculate ballpark superheat?






23. What is lined duct?






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






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






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






27. What gauge is thermostat wire?






28. Superheat should never be below how many degrees






29. Why are some ACR tubing lines insulated?






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






31. 7' round duct has a ballpark cfm of what?






32. How do you calculate EER?






33. What is considered normal operating conditions?






34. What are the two types of blower drives?






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






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






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






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






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






40. What are the two basic duct connection configurations for package units supply and return air ducts?






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






42. What is lined duct?






43. What do you do after you braze a system?






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






45. Pressure in ductwork is measured In what?






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






47. At what temperature will soft solder melt?






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






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






50. When do you install an auxillary drain pan?