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1/19/24, 5:52 AM Print Questions 1. In a hydronic heating​system, the heat exchange medium is​_____. A. ultraviolet light B. ammonia C. air D. water 2. In an​electric-resistance heating​system, electricity is used to heat​_______. A. natural gas B. coils of heavy wire C. water D. a boiler 3. Venti...

1/19/24, 5:52 AM Print Questions 1. In a hydronic heating​system, the heat exchange medium is​_____. A. ultraviolet light B. ammonia C. air D. water 2. In an​electric-resistance heating​system, electricity is used to heat​_______. A. natural gas B. coils of heavy wire C. water D. a boiler 3. Ventilation is the process of​_____. A. adding humidity to the air B. introducing fresh air into a building C. removing humidity from the air D. using filters to remove toxic and noxious particles 4. The device that lowers the temperature of the refrigerant before it enters the evaporator is the​_____. A. expansion device B. compressor C. condenser D. liquidator https://tdx.acs.pearsonprd.tech/api/v1/print/highered 1/4 1/19/24, 5:52 AM Print Questions 5. The two heat exchangers in the mechanical refrigeration cycle are the​_____. A. compressor and metering device B. evaporator and condenser C. compressor and evaporator D. compressor and condenser 6. Compared to the outdoor​air, the refrigerant entering the condenser is​_____. A. fresher B. the same temperature C. warmer D. cooler 7. Which of the following produces carbon​monoxide? A. Furnaces burning natural gas or propane B. Electric heat coils C. Hot water baseboards D. Solar collectors 8. A person must have EPA certification to​_____. A. work on an HVACR system B. buy or use refrigerant C. buy parts for an HVACR system D. release CFC or HCFC refrigerant to the atmosphere. https://tdx.acs.pearsonprd.tech/api/v1/print/highered 2/4 1/19/24, 5:52 AM Print Questions 9. Recovery is a process in which a refrigerant is​_____. A. converted to a different refrigerant B. removed and cleaned of moisture and impurities C. removed and stored D. remanufactured 10. An important difference between codes and standards is​that_______. A. codes are enforced by law B. inspectors can only enforce codes during regular work hours C. standards are rarely followed D. builders charge more for codes then standards 11. Before starting work on a​building, a contractor must apply for a​______. A. certificate of occupancy B. permanent electrical connection C. tax waiver D. permit 12. A person who services chillers most likely works in which​sector? A. ​Commercial/industrial B. Manufacturing C. ​Residential/light commercial D. Government https://tdx.acs.pearsonprd.tech/api/v1/print/highered 3/4 1/19/24, 5:52 AM Print Questions 13. A​competency-based training program is one that requires the trainee to​_____. A. demonstrate the ability to safely perform specified tasks B. have a​part-time job in construction C. pass a written test D. spend 8 hours a day in the classroom 14. A student entering a Youth Apprenticeship program in 11th grade could complete how much of an​NCCER-based program before graduating high​school? A. Two years B. One year C. Six months D. Eighteen months https://tdx.acs.pearsonprd.tech/api/v1/print/highered 4/4