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. Can refrigerant line sets be altered in length?






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






3. How are the condenser coils different on a high-efficiency unit?






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






5. What are the two types of package units?






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






7. On what terminal do you check amperage?






8. 9' round duct has a ballpark cfm of what?






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






10. Pressure in ductwork is measured In what?






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






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






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






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






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






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






17. The compressor is cooled by liquid refrigerant. (True of False)






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






19. How do you calculate cfm?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






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






22. How many amps can 8 g wire handle?






23. How is nominal-sized tubing sized?






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






25. How is flexible duct supported?






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






27. In what length rolls is soft copper tubing normally available?






28. How many cfm per ton?






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






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






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






32. What percentage silver do you use to braze two dissimilar metals such as steel and copper?






33. What is the typical pressure differance across a TXV?






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






35. How many BTU's per ton?






36. What is the typical pressure differance across a TXV?






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






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






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






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






41. When do you install an auxillary drain pan?






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






43. What are the two types of blower drives?






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






45. The fan switch closes at what temperature?






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






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






48. How is flexible duct supported?






49. The fan switch opens at what temperature?






50. At what temperature will soft solder melt?