A process stub is a - 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...

CSE 110 Exam 2 Questions with Correct Solutions What process helps with identifying the methods that make up a computer program? - Answer -Stepwise refinement The term "Black Box" is used with methods because - Answer -Only the specification matters; the implementation is not important. One advantage of designing methods as black boxes is that - Answer -many programmers can work on the same project without knowing the internal implementation details of methods. After the keywords "publ...

CSE 110 Exam 2 Questions With 100% Verified Answers What process helps with identifying the methods that make up a computer program? - answerStepwise refinement The term "Black Box" is used with methods because - answerOnly the specification matters; the implementation is not important. One advantage of designing methods as black boxes is that - answermany programmers can work on the same project without knowing the internal implementation details of methods. After the keywords "publi...

A __________ recovery device can be use for type 1 small appliance applications or type 2 applications if the total charge is below 15 pounds. - System dependent Always _____________ when connecting or disconnecting refrigeration hoses. - 1.) wear safety eyewear and butyl-lined gloves 2.) verify the hoses are rated for the refrigerant being used 3.) avoid trapping liquid refrigerant in the hoses To reach the necessary recovery level, when using a ________, it will most likely be essential t...

Are there drop-in replacements for R-12 systems? Why or why not? CORRECT ANSWERNo because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? CORRECT ANSWEREster based oils and they do not mix with other oils What type of lubricant is used with HCFCs? CORRECT ANSWERAlkylbenzene lubricant What is difference b/w ternary blend a azeotropic blend? CORRECT ANSWERTernary blends are threepart mi...

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...

Are there drop-in replacements for R-12 systems? Why or why not? - Answer-No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? - Answer-Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? - Answer-Alkylbenzene lubricant What is difference b/w ternary blend a azeotropic blend? - Answer-Ternary blends are three-part mixtures whereas aze...

EPA 608 Exam Practice Questions 1-100EPA 608 Exam Practice Questions 1-100 Ozone depletion is caused by _______ in HFC refrigerants. - Answer chlorine CFCs and HCFCs ________ making them capable capable of reaching the stratospheric ozone layer. - Answer do not dissolve in water or easily break down in the atmosphere According to the Rolanda-Molina theory, ________ are destroyed by each chlorine atom in the stratosphere. - Answer 100,000 ozone molecules The stratospheric ozone layer prote...

HVAC: EPA 608 Certification Study Guide Questions And Answers 100% Guaranteed Success. Are there drop-in replacements for R-12 systems? Why or why not? - correct answer. No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? - correct answer. Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? - correct answer. Alkyl...

What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? - November 14, 1994 1989- Montreal Protocol July 1 1992- Violation to vent CFCs or HCFCs Nov 15 1993- Recovery/Recycling equipment must be certified and labeled by EPA AND Before this date recovery equipment needed to be capable of removing 80% of the refrigerant, w or wo compressor, or 4 in Hg After this date recovery equipment needs to be capable of removing 90%, or 80% witho...