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






2. Name two general Types of commercial compressors






3. Identify heat exchanger inlets and outlets






4. Identify heat exchanger inlets and outlets






5. Outdoor air cooled






6. List two types of two-temperature valves






7. Evaporative condenser






8. Frosting






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






10. What is the counterflow principle






11. Name two general Types of commercial compressors






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






13. What is commonly used to produce flake ice?






14. Shell and coil






15. __ are used to minimize noise during compressor operations






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






17. What is the function of a check valve?






18. What is the counterflow principle






19. List 2 safety cutouts not used in domestic controls






20. Shell and tube






21. Evaporative condenser






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






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






24. What is the function of a check valve?






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






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






27. Defrost






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






29. Nonfrost






30. Frosting






31. List three uses for manual service valves.






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






33. List two types of two-temperature valves






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






35. What is commonly used to produce flake ice?






36. Immersed evaporators are surrounded by what?






37. __ are used to minimize noise during compressor operations






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






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






40. Shell and coil






41. Shell and tube






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






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






44. Defrost






45. Immersed evaporators are surrounded by what?






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






47. Tube-within-a-tube






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






49. List three uses for manual service valves.






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