DEM-137 (Heating and A/C Systems) FINAL CORRECT AND UPDATED!

Which of the following statements is true? - ANSWERWhen liquid boils, heat is absorbed. Which of the following best describes the principle of latent heat of vaporization? - ANSWERThe heat energy required to change a liquid to a vapor without raising its temperature. Which of the following terms is used as the U.S. standard of measurement of heat energy to rate A/C specification? - ANSWERBTUs. Which of the following terms is used a metric measurement of heat energy? - ANSWERJoules. In which stage of a typical refrigeration cycle does high-pressure gas change to become a high-pressure liquid? - ANSWERCondensation stage. At which stage in a typical refrigeration cycle does low-pressure liquid become a low-pressure gas? - ANSWEREvaporation stage. Which of the following air conditioning components is located in the truck cab? - ANSWEREvaporator. How is the A/C compressor effective cycle managed in truck air conditioning systems? - ANSWERElectronic thermostat, centrifugal clutch.