Question: 2. (16 points) A power cycle operates between two reservoirs at 27C and 427C, respectively, QH is the heat (thermal energy) received from the hot

2. (16 points) A power cycle operates between two reservoirs at

2. (16 points) A power cycle operates between two reservoirs at 27C and 427C, respectively, QH is the heat (thermal energy) received from the hot reservoir, QL is the heat rejected to the cool reservoir, and Wmech is the mechanical work produced. Please determine if the following cycles are possible and explain why. Note: you need to clearly identify the thermodynamic law violated if the cycle is impossible. (A) (4p) QH=700kJ,Wmech=400kJ,QL=300kJ (B) (4p) QH=700kJ,Wmech=500kJ,QL=200kJ (C) (4p) QH=700kJ,Wmech=300kJ,QL=600kJ (D) (4p) QH=700kJ,Wmech=600kJ,QL=100kJ

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