Boma - Hvac Study Guide Graded A+

Of the following choices, the warmest temperature is while the coldest temperature is {Ans: 303°K}The controller for a humidifier, a humidistat, has a power element that is sensitive {Ans: moisture}If an R-12 refrigeration system is operating with a 25.4 PSIG suction pressure, what is the evaporator superheat if the evaporator outlet temperature is 34°F? {Ans: 9°F}How many Btu's are required to change five pounds of ice at 20°F to steam at 220°F? {Ans: 6,520 Btu/h}The pressure in a duct system is measured in: {Ans: " WC}A typical evaporator operating temperature in an air-conditioning system is _. {Ans: 40°F}