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






2. __ are used to minimize noise during compressor operations






3. Outdoor air cooled






4. Defrost






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






6. What is the function of a check valve?






7. Tube-within-a-tube






8. List 2 safety cutouts not used in domestic controls






9. Name two general Types of commercial compressors






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






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






12. List two types of two-temperature valves






13. What is commonly used to produce flake ice?






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






15. List two types of two-temperature valves






16. What is the counterflow principle






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






18. Identify heat exchanger inlets and outlets






19. Evaporative condenser






20. Shell and coil






21. Evaporative condenser






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






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






24. Immersed evaporators are surrounded by what?






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






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






27. Identify heat exchanger inlets and outlets






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






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






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






31. What is commonly used to produce flake ice?






32. Frosting






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






34. List 2 safety cutouts not used in domestic controls






35. __ are used to minimize noise during compressor operations






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






37. List three uses for manual service valves.






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






39. Defrost






40. Nonfrost






41. What is the function of a check valve?






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






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






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






45. List three uses for manual service valves.






46. Outdoor air cooled






47. Immersed evaporators are surrounded by what?






48. Name two general Types of commercial compressors






49. Frosting






50. Nonfrost