Power Engineering 5th Class Book2 Exam Questions (144 Terms) With Verified Definitions Updated 2024

What is the purpose of the chilled water flow switch {Ans: Protects the chiller from freezing due to lack of water flow}Why must you avoid running a refrigeration system below 14 kPa when pumping down {Ans: A slightly positive system pressure is required to prevent air infiltration}A capacitor type control motor has the rotor and gear train sealed in a housing partially filled with {Ans: Oil}The flue gas temperature on the heat exchanger exit of a warm air furnace is about _______________ {Ans: 230°C (450°C)}Fusible plugs are made of materials that melt at a temperature of ______________ {Ans: 99°C (210°F)}Steam in a two-pipe, vacuum return system is supplied at a maximum pressure of _______________________ {Ans: 103 kPa ( 15psi)}