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






2. How is flexible duct supported?






3. How many cfm per ton?






4. What is lined duct?






5. 6' round duct has a ballpark cfm of what?






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






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






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






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






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






11. What are the two types of package units?






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






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






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






15. How will too much refrigerant effect subcooling?






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






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






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






19. 13 SEER is classified as what kind of efficiency?






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






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






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






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






24. How does ACR copper pipe come?






25. How does ACR copper pipe come?






26. How many amps can 12 g wire handle?






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






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






29. How is insulation around a duct rated?






30. What gauge is thermostat wire?






31. The refrigerant within the evaporator will typically boil at what temperature when it is 75 degrees inside with a relative humidity of 50%?






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






33. How do you calculate ballpark superheat?






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






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






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






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






38. What is the difference between SEER and EER?






39. On what terminal do you check amperage?






40. 8' round duct has a ballpark cfm of what?






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






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






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






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






45. 9' round duct has a ballpark cfm of what?






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






47. 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


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






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






50. How do you calculate EER?