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






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






4. Immersed evaporators are surrounded by what?






5. Identify heat exchanger inlets and outlets






6. __ are used to minimize noise during compressor operations






7. Outdoor air cooled






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






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






10. List two types of two-temperature valves






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






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






13. Shell and tube






14. Shell and tube






15. __ are used to minimize noise during compressor operations






16. List 2 safety cutouts not used in domestic controls






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






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






19. Tube-within-a-tube






20. Shell and coil






21. Evaporative condenser






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






23. Frosting






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






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






26. What is the function of a check valve?






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






28. List two types of two-temperature valves






29. Tube-within-a-tube






30. What is the counterflow principle






31. Identify heat exchanger inlets and outlets






32. Evaporative condenser






33. What is the counterflow principle






34. Outdoor air cooled






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






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






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






38. Defrost






39. List 2 safety cutouts not used in domestic controls






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






41. What is commonly used to produce flake ice?






42. Immersed evaporators are surrounded by what?






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






44. Nonfrost






45. List three uses for manual service valves.






46. Defrost






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






48. Shell and coil






49. Name two general Types of commercial compressors






50. What is commonly used to produce flake ice?