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






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






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






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






5. What gauge is thermostat wire?






6. How is ACR tubing sized?






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






8. What sort of pressure will a pull-through evaporator have?






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






10. How is nominal-sized tubing sized?






11. What is a package unit?






12. How are round ducts connected to one another?






13. How do you calculate EER?






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






15. What are the three ways a motor can fail electrically?






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






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






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






19. What is considered normal operating conditions?






20. Superheat should never be below how many degrees






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






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






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






24. At what temperature will soft solder melt?






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






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






27. How many amps can 12 g wire handle?






28. The fan switch opens at what temperature?






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






30. How will too much refrigerant effect superheat?






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






32. How do you calculate LRA?






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






34. Why are some ACR tubing lines insulated?






35. The A/C size is calculated by what?






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






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






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






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






40. 6' round duct has a ballpark cfm of what?






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






42. 8' round duct has a ballpark cfm of what?






43. What are the three ways a motor can fail electrically?






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






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






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






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






48. How many cfm per ton?






49. At what temperature does refrigerant condense in a standard-efficiency unit?






50. How do you calculate cfm?

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