Nocti Hvac Final Exam 2026/2027 Questions with Correct Detailed Answers || Already Graded A+ Latest Version

Nocti Hvac Final Exam 2026/2027 Questions with Correct Detailed Answers || Already Graded A+ Latest Version 1. A heat pump designed to work for both heating and cooling. which device changes the flow of the refregeriant for each mode? - ANSWER reversing valve 2. Initation defrost in a heat pump system can be done by the flowing method timed, electronic board, and - ANSWER Temperature 3. the permanent storage device found inside a desktop computer is a - ANSWER hard drive 4. One chlorine atom can destroy how many ozone molecules? - ANSWER 100,000 5. bad ozone is found in which of the following - ANSWER troposphere 6. which refrigersant types have a very low GWP? - ANSWER HFC 7. which type of oil is used in modern automotive air conditioning system? - ANSWER Glycols 8. what year did it become necessary for all hvac technitions to become certified to handle refrigerant under section 608 for thr clean air act? - ANSWER 1994 9. which is not a health risk associted with the ozone depleation - ANSWER lung cancer 10. which refrgrant type of experiance the largest temperature glides? - ANSWER Zoetrope's 11. The most commonly known CFC Refrigrant? - ANSWER R-12 12. if the operating pressures are 90 psih on the low side and 250 psig on the high side what would be the problem? - ANSWER ineffcient compressor 13. what year did it become unlawful to knowingly vent CFC and HCFCs? - ANSWER 1992 14. The process od the removing refrigerant from an air conditioning system and storing it in an external container? - ANSWER Recovery 15. One-ton Ac system is ? - ANSWER 12,000 BTU's 16. One tone of AC requires how many CFMs - ANSWER 400 17. Opposition to the flow of an alernating consumpton in A/c circuit - ANSWER Power=1 X E X power factor 18. R-22 i color coded - ANSWER light green 19. the study of air and is properties is called - ANSWER Psychometrics 20. the fitting used in duct work are? - ANSWER plenum, extended plenum, Rducing plenum or perimeter loop 21. Two types of non- conducting ladders - ANSWER wood and fiberglass 22. how far should ladder stick out above a landing surface - ANSWER 3 feet 23. The easiest way to move equipment across a roof is to use - ANSWER plywood and rollers 24. power tools that are not double insulted must have three prong plugs to ensure that the tool is properly - ANSWER grounded 25. the tool used to create internal threads is called a - ANSWER tap 26. the tool to creat pipe threads on the outside of a pipe is called a - ANSWER die 27. Fires that involve ordinary materials such as paper, cardboard, and wood are classified as Type __________ fires. - ANSWER A fires 28. In the electrical circuits, the _____ wire protects the operator - ANSWER Grounding 29. Fires that involve electrical equipment are classified as Type _____ fires. - ANSWER Type c fires 30. electrical power should always be shut off at the ____ or entrance panel and locked in an approved manner when installing equipment - ANSWER distribuation 31. a ________ is used to measure the amount of CO2 in the flue product - ANSWER CO2/O2 indicator 32. After brazing a joint in a very tight location, the technician would use a(n) __________ to determine if the joint is properly brazed. - ANSWER Inspection mirror 33. the dial-type meter used to measure the pressure in a heating unit flue pipe is called a - ANSWER cordless drill 34. evacuting a system is accomplishedwith an _____ and helps to remove air and non- conditioning and refrgeration applications - ANSWER screw compressor 35. the four major components of a vapor compression refrigeration system are the compressor, condenser, evaporator and - ANSWER Metering Device