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. List two types of two-temperature valves






2. Nonfrost






3. Shell and coil






4. Frosting






5. Defrost






6. What is the function of a check valve?






7. Name two general Types of commercial compressors






8. Identify heat exchanger inlets and outlets






9. __ are used to minimize noise during compressor operations






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






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






12. Shell and tube






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






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






15. Tube-within-a-tube






16. Evaporative condenser






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






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






19. Shell and coil






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






21. List 2 safety cutouts not used in domestic controls






22. List three uses for manual service valves.






23. Immersed evaporators are surrounded by what?






24. List three uses for manual service valves.






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






26. What is the function of a check valve?






27. What is the counterflow principle






28. List 2 safety cutouts not used in domestic controls






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






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






31. __ are used to minimize noise during compressor operations






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






33. Evaporative condenser






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






35. List two types of two-temperature valves






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






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






38. Defrost






39. Name two general Types of commercial compressors






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






41. Identify heat exchanger inlets and outlets






42. Shell and tube






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






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






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






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






47. Tube-within-a-tube






48. Frosting






49. What is commonly used to produce flake ice?






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