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. How many cfm per ton?






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






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






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






6. What are the two types of blower drives?






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






8. Why are some ACR tubing lines insulated?






9. How many BTU's per ton?






10. What is lined duct?






11. What is the normal evaporator temperature?






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






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






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






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






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






17. How many amps can 8 g wire handle?






18. How will too much refrigerant effect superheat?






19. How many amps can 12 g wire handle?






20. Which is more efficient - a TXV or a fixed-orifice metering device?






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






22. Do you need a vent on a push-through evaporator?






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






24. 6' round duct has a ballpark cfm of what?






25. Most duct insulation is made of what?






26. How do you calculate EER?






27. On what terminal do you check amperage?






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






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






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






31. Pressure in ductwork is measured In what?






32. Where is insulation used on copper tubing used for air-conditioning?






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






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






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






36. What is considered normal operating conditions?






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






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






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






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






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






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






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






44. The furnace size is calculated by what?






45. 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


46. Superheat should never be below how many degrees






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






48. Pressure in ductwork is measured In what?






49. How many cfm per ton?






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