What is the function of the governor in a steam engine?
a. controls speed by regulating the amount of steam sent to the engine c. controls the amount of steam released through the safety valve b. regulates the amount of heat sent to the boiler d. regulates the flow of water into the boiler

Which would not reduce the amount of green house gasses in the air

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.