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






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






3. How is ACR tubing sized?






4. How do you calculate cfm?

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


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






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






7. At what temperature does refrigerant condense in a high-efficiency unit?






8. How many amps can 8 g wire handle?






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






10. How do you calculate LRA?






11. How do you calculate ballpark superheat?






12. 13 SEER is classified as what kind of efficiency?






13. How does ACR copper pipe come?






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






15. 8' round duct has a ballpark cfm of what?






16. The fan switch opens at what temperature?






17. The fan switch closes at what temperature?






18. What are the two types of blower drives?






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






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






21. 10 SEER is classified as what kind of efficiency?






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






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






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






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






26. What is the normal evaporator temperature?






27. Where do you apply flux when soldering?






28. How much does a drain line need to drop per foot of length?

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


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






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






31. How are round ducts supported?

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


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






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






34. How are the high pressure switch and the low pressure switch wired with the compressor contactor?






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






36. Why are some ACR tubing lines insulated?






37. At what temperature will brazing melt?






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






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






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






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






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






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






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






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






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






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






48. What distributes supply air to a room in a structure?






49. How is insulation around a duct rated?






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