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. How many amps can 10 g wire handle?






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






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






4. 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


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






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






7. Does a package unit come from the factory pre-charged?






8. 10' round duct has a ballpark cfm of what?






9. 6' round duct has a ballpark cfm of what?






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






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






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






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






14. How do you calculate LRA?






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






16. The fan switch closes at what temperature?






17. What type of air conditioning system must be charged using the superheat method?






18. What is a package unit?






19. What are the four materials used to make duct?






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






21. What are the two types of return air systems in residential installations?






22. At what temperature will soft solder melt?






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






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






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






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






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






28. How do you calculate cfm?

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


29. What is the difference between SEER and EER?






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






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






32. Where do you apply flux when soldering?






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






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






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






36. How is ACR tubing sized?






37. The fan switch opens at what temperature?






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






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






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






41. Most duct insulation is made of what?






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






43. The furnace size is calculated by what?






44. How do you calculate cfm?

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


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






46. On what terminal do you check amperage?






47. What gauge is thermostat wire?






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






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






50. Superheat should never be below how many degrees