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. What is the counterflow principle






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






3. Outdoor air cooled






4. Shell and coil






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






6. Nonfrost






7. __ are used to minimize noise during compressor operations






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






9. Evaporative condenser






10. Frosting






11. Defrost






12. __ are used to minimize noise during compressor operations






13. List two types of two-temperature valves






14. What is commonly used to produce flake ice?






15. Identify heat exchanger inlets and outlets






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






17. Outdoor air cooled






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






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






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






21. Immersed evaporators are surrounded by what?






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






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






24. Identify heat exchanger inlets and outlets






25. Frosting






26. Immersed evaporators are surrounded by what?






27. Tube-within-a-tube






28. Nonfrost






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






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






31. Name two general Types of commercial compressors






32. What is the function of a check valve?






33. Shell and coil






34. List three uses for manual service valves.






35. Shell and tube






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






37. What is the function of a check valve?






38. Evaporative condenser






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






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






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






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






43. Name two general Types of commercial compressors






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






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






46. Tube-within-a-tube






47. List 2 safety cutouts not used in domestic controls






48. What is the counterflow principle






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






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