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Environmental Protection Agency.
Typology: Exams
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What needs to be done before disposing of equipment that contains CFCs, HCFCs, or their substitutes? - ANSWER-Recover the equipment What other appliances do Section 608 regulations apply to? A. Commercial refrigeration equipment B. Air conditioning equipment C. Both of the above D. None of the above - ANSWER-C
What penalties can technicians face if they violate the Clean Air Act? (Select all that apply) A. They may lose their Section 608certification B. They may face federal charges C. They may have to do community service D. They may be fined - ANSWER-A, B, and D. Which of the following are considered de minimis releases of refrigerant? (Select all that apply) Answer A. HCFCs released when disconnecting hoses equipped with low loss fittings B. Release of carbon dioxide with low-loss fittings C. Release of HFCs due to catastrophic failure of equipment
B. Releasing isobutane while servicing equipment C. Releasing HFC refrigerant because of catastrophic equipment failure D. Refrigerants released when disconnecting on low-loss hoses to service an appliance - ANSWER-A and D Which of the following are considered natural refrigerants? (Select all that apply) Answer A. R- 290 B. R-600a C. R- 744
D. R- 11 - ANSWER-R-290, R-600a, and R- 744 Which of the following do you not need Section 608 certification to purchase? Answer A. Nitrogen B. HFCs C. CFCS D. HCFCS - ANSWER-A. Nitrogen Which of the following is a CFC? (Choose all that apply) Answer A. R- 11 B. R- 12
C. CFCs and natural refrigerants D. All natural refrigerants - ANSWER-B. Which organization can test your recovery equipment used to service a system with R-12? Answer UL AHRI С. ЕРА D. Both (A) and (B) - ANSWER-D Who does not need to maintain proper records of refrigerants? - ANSWER-The EPA
Which of the following are considered de minimis releases? (Select all that apply) Answer A. Catastrophic equipment failure B. Accidental release with timely repair of appliances C. Releases when connecting or disconnecting hoses without low loss fittings D. Releases when connecting or disconnecting hoses with low loss fittings - ANSWER-A, B and D Equipment that uses nitrogen as a refrigerant is not subject to Section 608 requirements. True or False - ANSWER-True
A. Make your house hotter B. Change state from liquid to vapor C. Make your house cooler D. None of the above - ANSWER-B. and C. Which component has the opposite function to the condenser? - ANSWER-Evaporator What is the compressor's job? - ANSWER-To increase the pressure What is the condenser's job? - ANSWER-To cool the high pressure vapor
What is the function of the metering device? - ANSWER-To decrease pressure What is the state of the refrigerant when it enters the condenser?
C. Condenser D. Metering Device - ANSWER-B and C Which components change the refrigerant's pressure? (Select all that apply) Answer A. Evaporator B. Compressor C. Condenser D. Metering Device - ANSWER-B and C Which of the following states has the highest temperature? (Assume constant pressure) liquid
solid vapor water - ANSWER-Vapor True or False: Boiling requires the addition of heat. - ANSWER- True Condensation happens when a gas or vapor cools down and becomes liquid. T or F? - ANSWER-True For the same substance, at the same temperature, the average speed of molecules in a vapor is the same as the average speed of molecules in a liquid. Select one: True
Select one: True False - ANSWER-True The boiling point of most refrigerants is 212 °F. T or F? - ANSWER-False The vapor leaving the compressor is lower in pressure than vapor entering the compressor. Select one: True False - ANSWER-False
You are boiling a pot of water with the lid on. As the water heats up and starts to boil, you notice that drops of water form on the bottom of the pot lid. This is an example of condensation. Select one: True False - ANSWER-True Your air conditioning works by adding cold air into your house. Select one: True False - ANSWER-False B2 refrigerants are more dangerous than which of the following? (Select all that apply) Answer
Chlorofluorocarbons Chlorofluorons Carbonfluoride - ANSWER-Chlorofluorocarbons Which of the following elements do CFCs contain? (Select all that apply) Answer A. Cadmium B. Carbon C. Carbon dioxide D. Fluorine E. Chlorine - ANSWER-B, D, and E What does HCFC stand for? Answer
Hydrocarbons Hydrofluorocarbons Hydrochlorofluorocarbons Hydrochlorofluoros - ANSWER-Hydrochlorofluorocarbons Other than fluorine and chlorine, what do HCFCs contain? (Select all that apply) Answer A. Hydrogen B. Carbon C. Helium D. Calcium - ANSWER-A and B Which of the following molecules can be found in HCFCs? (Select all that apply)
