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 counterflow principle






2. __ are used to minimize noise during compressor operations






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






4. What is commonly used to produce flake ice?






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






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






7. Nonfrost






8. Evaporative condenser






9. Immersed evaporators are surrounded by what?






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






11. Name two general Types of commercial compressors






12. Outdoor air cooled






13. List 2 safety cutouts not used in domestic controls






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






15. Tube-within-a-tube






16. Evaporative condenser






17. Outdoor air cooled






18. List 2 safety cutouts not used in domestic controls






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






20. Frosting






21. List three uses for manual service valves.






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






23. What is the counterflow principle






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






25. Defrost






26. List three uses for manual service valves.






27. Frosting






28. Shell and coil






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






30. Identify heat exchanger inlets and outlets






31. List two types of two-temperature valves






32. __ are used to minimize noise during compressor operations






33. What is the function of a check valve?






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






35. Immersed evaporators are surrounded by what?






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






37. Nonfrost






38. Name two general Types of commercial compressors






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






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






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






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






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






44. Defrost






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






46. What is the function of a check valve?






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






48. Shell and tube






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






50. List two types of two-temperature valves