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. Name two general Types of commercial compressors






2. What is the function of a check valve?






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






4. Shell and tube






5. List three uses for manual service valves.






6. List 2 safety cutouts not used in domestic controls






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






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






9. Tube-within-a-tube






10. Frosting






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






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






13. What is commonly used to produce flake ice?






14. Frosting






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






16. List two types of two-temperature valves






17. Shell and tube






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






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






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






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






22. Defrost






23. Identify heat exchanger inlets and outlets






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






25. Nonfrost






26. Name two general Types of commercial compressors






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






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






29. Identify heat exchanger inlets and outlets






30. __ are used to minimize noise during compressor operations






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






32. What is the counterflow principle






33. List 2 safety cutouts not used in domestic controls






34. Evaporative condenser






35. List two types of two-temperature valves






36. Shell and coil






37. What is the counterflow principle






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






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






40. Outdoor air cooled






41. Outdoor air cooled






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






43. Defrost






44. Evaporative condenser






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






46. What is commonly used to produce flake ice?






47. Shell and coil






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






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






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