QOD: ]ET ENGINE EFFICIENCY Knowing the thermal processes of the jet engine [FIV diagram}, one can calculate the engine efficiency:r of the engine. Alternatively. we can set the upper bound of the efficiency with the temperatures in different stages in the jet engine using 2\"d Law. Question: {a} With the given information below, find the upper bound of the efficiency limited by 2"L1 Law. [Hint What is the most efficient engine again?) fh] Is the efficiencilr ofjet engine higher or lower than Utto and Diesel engines in general? Give one main reason for the answer. {cl Jet engine produces work with turbines. Give one example of how turbine engine is used in other aspect in our life. Temperature Information of a typical jet engine: Air temperature before compressor = 40C at cruising altitude Air temperature after compressor ~4DEFC Air+Fuel temperature after combustion ~2-[ZD'3'C it