HVAC (EPA Certification Exam Section 608) Questions and Answers 100% Pass

HVAC (EPA Certification Exam Section 608) Questions and Answers 100% Pass How many types of HVAC certifications are there? - Correct Answer ️️ -There are 4 types. What does a metering device do? - Correct Answer ️️ -The metering device causes a reduction in pressure, and therefore a reduction in saturation temperature. What is absorbed in the evaporator? - Correct Answer ️️ -Heat is absorbed in the evaporator. What happens in the evaporator? - Correct Answer ️️ -Heat is absorbed in the evaporator and causes the refrigerant to boil from liquid to vapor. At the outlet of the evaporator the refrigerant is what? - Correct Answer ️️ -The refrigerant is now a low temperature, low pressure vapor. As the refrigerant expels heat, the refrigerant condenses to a what? - Correct Answer ️️ -It condenses to a liquid. At the condenser outlet what pressure is the refrigerant? - Correct Answer ️️ -The refrigerant is a high pressure liquid. What is a metering device used for? - Correct Answer ️️ -The metering device causes a reduction in pressure, and therefore a reduction in saturation temperature. A system that uses a capillary tube or fixed bore metering device is usually equipped with a blank? - Correct Answer ️️ -Accumulator which would be located in the suction line directly following the evaporator. A system that uses a thermostatic expansion valve is usually equipped with a what? - Correct Answer ️️ -A receiver, which would be located in the liquid line directly following the condenser. The compound gauge is what color? - Correct Answer ️️ -Blue. The high pressure gauge is what color? - Correct Answer ️️ -Red. The blank measures low pressure (psig) and vacuum (inches Hg.). - Correct Answer ️️ -Compound gauge. What does the high pressure gauge measure. - Correct Answer ️️ -It measures high side (discharge) pressure. EPA regulations require that hoses be equipped with what? - Correct Answer ️️ -Low loss fittings that will minimize refrigerant loss when hoses are disconnected. The stratosphere is located where? - Correct Answer ️️ -Between 10 and 30 miles above sea level. What is the stratosphere comprised of? - Correct Answer ️️ -Ozone. An Ozone molecule consists of what? - Correct Answer ️️ -Three oxygen atoms (03). What does Ozone protect us from? - Correct Answer ️️ -Harmful ultraviolet radiation. What does Ozone help maintain? - Correct Answer ️️ -It helps maintain stable Earth temperatures.