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






3. List two types of two-temperature valves






4. Evaporative condenser






5. Identify heat exchanger inlets and outlets






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






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






8. Defrost






9. Defrost






10. Name two general Types of commercial compressors






11. Outdoor air cooled






12. List two types of two-temperature valves






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






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






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






16. __ are used to minimize noise during compressor operations






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






18. Evaporative condenser






19. Shell and coil






20. List three uses for manual service valves.






21. List 2 safety cutouts not used in domestic controls






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






23. Tube-within-a-tube






24. List 2 safety cutouts not used in domestic controls






25. Shell and tube






26. What is commonly used to produce flake ice?






27. Nonfrost






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






29. Frosting






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






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






32. Outdoor air cooled






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






34. Immersed evaporators are surrounded by what?






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






36. List three uses for manual service valves.






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






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






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






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






41. Identify heat exchanger inlets and outlets






42. What is the counterflow principle






43. What is the function of a check valve?






44. Tube-within-a-tube






45. __ are used to minimize noise during compressor operations






46. Nonfrost






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






48. What is the counterflow principle






49. Frosting






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