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






3. Frosting






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






5. List 2 safety cutouts not used in domestic controls






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






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






8. Identify heat exchanger inlets and outlets






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






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






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






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






13. Identify heat exchanger inlets and outlets






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






15. Frosting






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






17. Name two general Types of commercial compressors






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






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






20. List two types of two-temperature valves






21. Nonfrost






22. Outdoor air cooled






23. Tube-within-a-tube






24. Nonfrost






25. What is the counterflow principle






26. List three uses for manual service valves.






27. Defrost






28. Name two general Types of commercial compressors






29. Evaporative condenser






30. Immersed evaporators are surrounded by what?






31. __ are used to minimize noise during compressor operations






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






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






34. What is commonly used to produce flake ice?






35. Defrost






36. What is the function of a check valve?






37. Shell and tube






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






39. List three uses for manual service valves.






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






41. __ are used to minimize noise during compressor operations






42. List 2 safety cutouts not used in domestic controls






43. Outdoor air cooled






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






45. What is the function of a check valve?






46. Shell and tube






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






48. Shell and coil






49. What is commonly used to produce flake ice?






50. Tube-within-a-tube