Test your basic knowledge |

Air Conditioning Basics

Subjects : industries, engineering
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 is the function of a check valve?






2. List the three commonly used types of natural convection evaporators.






3. In a hot gas defrost system - which parts of the system are heated?






4. Evaporative condenser






5. Shell and coil






6. Name two general Types of commercial compressors






7. When Temp difference between evaporators in a system is large - a ___ valve is used






8. What determines the opening or closing of the pressure-operated water regulating valve?






9. Defrost






10. Tube-within-a-tube






11. To eliminate uncertain pressure fluctuations - a ___ is used.






12. What part of the metal is used in an all-metal pressure evaporator?






13. What determines the opening or closing of the pressure-operated water regulating valve?






14. What is commonly used to produce flake ice?






15. Shell and coil






16. To eliminate uncertain pressure fluctuations - a ___ is used.






17. List three uses for manual service valves.






18. What is the function of a check valve?






19. What is the counterflow principle






20. Identify two methods used to maintain proper head pressure in an outdoor air cooled condensing system






21. What is the counterflow principle






22. Name two general Types of commercial compressors






23. Frosting






24. Describe the difference in parallel and cross-Flow cooling towers






25. Tube-within-a-tube






26. A device used to show a system is low on refrigerant is called a __. This sympton would indicate __ in this device.






27. What is commonly used to produce flake ice?






28. List 2 safety cutouts not used in domestic controls






29. Nonfrost






30. A chemical used to eliminate moisture in a filter drier is known as a ___






31. A device used to show a system is low on refrigerant is called a __. This sympton would indicate __ in this device.






32. List 2 basic types of motor controls used in commercial refrigeration






33. In a hot gas defrost system - which parts of the system are heated?






34. Outdoor air cooled






35. Evaporative condenser






36. Immersed evaporators are surrounded by what?






37. List three uses for manual service valves.






38. __ are used to minimize noise during compressor operations






39. List the three commonly used types of natural convection evaporators.






40. Identify two methods used to maintain proper head pressure in an outdoor air cooled condensing system






41. What part of the metal is used in an all-metal pressure evaporator?






42. Outdoor air cooled






43. List two types of two-temperature valves






44. Immersed evaporators are surrounded by what?






45. Shell and tube






46. Frosting






47. Nonfrost






48. A chemical used to eliminate moisture in a filter drier is known as a ___






49. Defrost






50. List 2 basic types of motor controls used in commercial refrigeration