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PA Emissions Inspection Exam | Questions with Verified Answers

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PA Emissions Inspection Exam | Questions with Verified Answers What health problems can pollution cause? Correct Answer: Respiratory issues What percent of air pollution is caused by vehicles? Correct Answer: 20% How much less air pollution do we have now than in the 1960s? (%) Correct Answer: 98% less What is the average thermal efficiency? (%) Correct Answer: 20% Where does 80% of the rest of the fuel go to? Correct Answer: Friction, heat, and emissions What are the 5 major pollutants? Correct Answer: Hydrocarbons (HC), Carbon monoxide (CO), Oxides of nitrogen (NOx), Sulfur dioxide (SO2), and particulate matter What are hydrocarbons? Correct Answer: Unburned fuel of carbon and hydrogen What are hydrocarbons emitted through? Correct Answer: Incomplete combustion and fuel evaporation What are hydrocarbons caused by? Correct Answer: Misfire, rich, ignition timing, engine deficiencies, and fuel injectors What has lowered hydrocarbons? Correct Answer: OBD 2, component controls, fuel delivery, ignition, emissions system, and EVAPs Can you see or smell carbon monoxide? Correct Answer: No

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