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. Superheat should never be below how many degrees






2. The fan switch closes at what temperature?






3. How is ACR tubing sized?






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






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






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






7. At what temperature will soft solder melt?






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






9. What are the two types of blower drives?






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






11. What kind of copper tubing is used for plumbing and heating applications?






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






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






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






15. What is the typical temperature difference between a high-efficiency condenser and the ambient temperature?






16. Do you need a vent on a pull-through evaporator?






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






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






19. Where do you apply flux when soldering?






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






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






22. What is the typical temperature difference between a high-efficiency condenser and the ambient temperature?






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






24. How many BTU's per ton?






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






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






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






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






29. The load on the evaporater will effect which pressure?






30. What do you use to check for leaks?






31. How are round ducts connected to one another?






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






33. Pressure in ductwork is measured In what?






34. Can refrigerant line sets be altered in length?






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






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






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






38. What are the two types of blower drives?






39. What is considered normal operating conditions?






40. On what terminal do you check amperage?






41. How are round ducts supported?

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42. The fan switch closes at what temperature?






43. Why are some ACR tubing lines insulated?






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






45. If the rpm's are 1050 - how many poles does the motor have?






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






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






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






49. The fan switch opens at what temperature?






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