A heat engine consists of max theoretical efficiency of 25% if the high temperature reservoir is at Th=127 C.
i) At what would be the temperature of the low temperature reservoir, Tc this were a Carnot engine?
ii) In one cycle a real engine extracts 250 J of heat from the hot reservoir while doing 40 J of work. Determine the real efficiency of the engine?
iii) Determine how much heat does the real engine exhaust to the cold reservoir?