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 is a package unit?






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






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






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






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






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






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






8. The fan switch closes at what temperature?






9. What do you use to check for leaks?






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






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






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






13. When do you install an auxillary drain pan?






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






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






16. How many amps can 10 g wire handle?






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






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






19. How are high-efficiency condenser coils different from standard-efficiency condenser coils?






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






21. Pressure in ductwork is measured In what?






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






23. 7' round duct has a ballpark cfm of what?






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






25. How many amps can 14 g wire handle?






26. How is nominal-sized tubing sized?






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






28. The furnace size is calculated by what?






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






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






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






32. What is the normal evaporator temperature?






33. How do you calculate EER?






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






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






36. 10' round duct has a ballpark cfm of what?






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






38. How do you calculate ballpark superheat?






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






40. Sections of duct board can be fastened together with what?






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






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






43. The fan switch opens at what temperature?






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






45. How will too much refrigerant effect subcooling?






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






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






48. 10' round duct has a ballpark cfm of what?






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






50. How many cfm per ton?