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






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






3. List three uses for manual service valves.






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






5. Name two general Types of commercial compressors






6. Evaporative condenser






7. Nonfrost






8. __ are used to minimize noise during compressor operations






9. Defrost






10. List 2 safety cutouts not used in domestic controls






11. Defrost






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






13. Frosting






14. Tube-within-a-tube






15. List 2 safety cutouts not used in domestic controls






16. List three uses for manual service valves.






17. Evaporative condenser






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






19. Shell and tube






20. What is the counterflow principle






21. Immersed evaporators are surrounded by what?






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






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






24. Outdoor air cooled






25. Immersed evaporators are surrounded by what?






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






27. Tube-within-a-tube






28. What is commonly used to produce flake ice?






29. What is commonly used to produce flake ice?






30. What is the function of a check valve?






31. List two types of two-temperature valves






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






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






34. What is the function of a check valve?






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






36. Identify heat exchanger inlets and outlets






37. Outdoor air cooled






38. What is the counterflow principle






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






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






41. Name two general Types of commercial compressors






42. Frosting






43. Nonfrost






44. Identify heat exchanger inlets and outlets






45. Shell and coil






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






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






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






49. __ are used to minimize noise during compressor operations






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