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. Immersed evaporators are surrounded by what?






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






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






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






5. Tube-within-a-tube






6. What is the function of a check valve?






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






8. Frosting






9. Outdoor air cooled






10. Outdoor air cooled






11. __ are used to minimize noise during compressor operations






12. Identify heat exchanger inlets and outlets






13. __ are used to minimize noise during compressor operations






14. Identify heat exchanger inlets and outlets






15. Shell and coil






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






17. Tube-within-a-tube






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






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






20. What is commonly used to produce flake ice?






21. List three uses for manual service valves.






22. List 2 safety cutouts not used in domestic controls






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






24. Evaporative condenser






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






26. What is the counterflow principle






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






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






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






30. Frosting






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






32. Name two general Types of commercial compressors






33. Shell and tube






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






35. What is commonly used to produce flake ice?






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






37. Defrost






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






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






40. Immersed evaporators are surrounded by what?






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






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






43. Nonfrost






44. Shell and coil






45. Nonfrost






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






47. Defrost






48. Shell and tube






49. What is the function of a check valve?






50. List two types of two-temperature valves