Hfo is - Study guides, Class notes & Summaries

EPA 608 Certification Exam Questions and answers Ozone depletion is caused by _ in HCFC refrigerants - ANSWERS Chlorine CFCs and HCFCs _ making them capable of reaching the stratospheric ozone - ANSWERS do not dissolve in water or easily break down in the atmosphere How many ozone molecules are destroyed by one chlorine atom - ANSWERS 100,000 ozone molecules The stratospheric ozone layer protects us from _ - ANSWERS ultraviolet radiation from the sun Which health effect increases fro...

What does ozone in the stratosphere above the earth consist of? a. Molecules containing 2 oxygen atoms b. Molecules containing 3 oxygen atoms c. Molecules containing 4 oxygen atoms d. Molecules containing 5 oxygen atoms - b. Molecules containing 3 oxygen atoms Which of the following refrigerants has the lowest global warming potential? a. R-134a b. R-407C c. R-410A d. R-600a - d. R-600a Which of the following gases is used as the baseline measurement for global warming potentia...

EPA 608 9th edition 85 Questions with Comple te SolutionsReusable refrigerant containers under high-pressure must be hydrostatically tested how often? - Correct Answer 5 years How much can a person be fined per day per violation for knowingly releasing a regulated substance that violates the Clean Air Act? - Correct Answer $44,539 HCFCs contain - Correct Answer Hydrogen, Chlorine, Fluorine, and Carbon Which of the following refrigerants is an HFO? - Correct Answer R-1234ze An ozone ...

Reusable refrigerant containers under high-pressure must be hydrostatically tested how often? - ANSWER 5 years How much can a person be fined per day per violation for knowingly releasing a regulated substance that violates the Clean Air Act? - ANSWER $44,539 HCFCs contain - ANSWER Hydrogen, Chlorine, Fluorine, and Carbon Which of the following refrigerants is an HFO? - ANSWER R-1234ze An ozone molecule contains; - ANSWER Three oxygen atoms

Why are flammable HFO refrigerants classified as A2L and not A2? - They have low flammability, being less flammable than HC refrigerants. Which of the following statements is true? - Propane cylinders for grilling contains impurities that refrigerant-grade propane does not have. Over-evacuation of a system can ________ - never occur; you can never pull too much air or other impurities from a system A system containing a flammable refrigerant must have the process tubes or service connec...

MACS Certification Questions And Answers 100% Correct If the mechanic's gauges rise from a vacuum to pressure, what is required? - Answer- Additional recovery What is the only way to fully clear moisture from the A/C system? - Answer- Replacing the desiccant Pressure ______ the boiling point - Answer- Raises Vacuum _______ the boiling point - Answer- Lowers What should you do when replacing hoses? - Answer- Make sure you have the correct type/size of tubing What does GWP stand for? - ...

Since _____, it is illegal to vent substitutes for CFC and HCFC refrigerants Nov 15, 1995 R-134a is a chlorine-free refrigerant True Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:05 / 0:15 Full screen Brainpower Read More Since ________, it is no longer legal for CFCs to be manufactured or imported into the United States Jan 1, 1996 A refillable refrigerant cylinder must not be filled above ______ of its full capacity. 80% Section...

EPA 608 Exam Practice Questions 1-100 with Complete Solution Ozone depletion is caused by _ in HCFC refrigerants - -Chlorine CFCs and HCFCs _ making them capable of reaching the stratospheric ozone - - do not dissolve in water or easily break down in the atmosphere How many ozone molecules are destroyed by one chlorine atom - -100,000 ozone molecules The stratospheric ozone layer protects us from _ - -ultraviolet radiation from the sun Which health effect increases from loss of the stra...

The use of ultraviolet (UV) or fluorescent dyes in an HFO-1234yf system is: - ACCURATE ANSWERS Approved by some vehicle manufactures but not by others One effect of some refrigerant gases in the atmosphere is that they: - ACCURATE ANSWERS Contribute to trapping heat Which item is not mentioned in the SAE J2099 Standard of refrigerant purity? - ACCURATE ANSWERS Sludge When it has been determined that an A/C system has a low refrigerant charge, what should be done? - ACCURATE ANSWERS Perf...

*Orthotics* - - Know the general categories to describe orthotics and the purpose of each type - Recommend orthotics for painful joints, tissue protection and immobilize for healing - Understand principle of splinting fewest joints possible - Describe appropriate angle of pull (90 degree) and rationale - Understand principles related to materials, fit, and safety What is the purpose for splinting? - 1. Support a painful joint 2. Immobilize 3. Protect healing or damaged tissue 4. Provid...