Rac 40 quiz 3 review - Study guides, Class notes & Summaries

RAC 40 Quiz 6 Review | Latest Version | 2024/2025 | Graded A+ What is the primary purpose of the refrigerant in a cooling system? To absorb heat from the environment and transfer it elsewhere. What safety precaution should be taken when handling refrigerants? Always wear protective gloves and goggles to prevent skin and eye exposure. Why is it important to monitor refrigerant levels in a system? To ensure efficient operation and prevent compressor damage due to low refrigerant. ...

RAC 40 Quiz 2 Review | Latest Version | 2024/2025 | Rated A+ What is specific gravity? Specific gravity is the ratio of the density of a substance to the density of a reference substance (usually water for liquids). What does Boyle's Law state about pressure and volume in a gas? Boyle's Law states that the pressure of a gas is inversely proportional to its volume when temperature is constant. What does Charles's Law state about temperature and volume in a gas? Charles's L...

RAC 40 Quiz 4 Review Questions | Latest Version | 2024/2025 | 100% Verified What is the main property of a refrigerant that allows it to change from liquid to gas? The main property is its low boiling point, which allows it to evaporate and absorb heat at low temperatures. What is a common environmental concern associated with certain refrigerants? Certain refrigerants contribute to ozone depletion and global warming. What is the difference between a CFC and an HFC refrigerant? ...

RAC 40 Quiz 6 Review - Questions and Answers When connecting stranded wire under a screw terminal (like a thermostat) what process should be used to ensure a secure and solid connection is obtained? Solder the end of the wire so all copper strands are binded together and no loose wires will fall out Nails are sometimes coated with zinc to protect them from corrosion True A wall anchor is a onetime fastener False A pin rivet must be installed in a properly sized, pre-drilled hole. True Perforat...

The _____ compressor is another positive displacement compressor and is used for larger air conditioning and refrigeration applications. Screw Compressor The four (4) major components of a vapor compression refrigeration system are the compressor, condenser, evaporator, and ________ ______. Metering device The amount of heat a refrigerant contains with -40F as the 0 heat content reference point is called Enthalpy From a performance standpoint, a substitute for R-12 is R-134A The _________...