ERM. Which of the following energy flow dia- gram correctly describes a heat engine that op- Note: 12 and 3-74 3 (7, = 600K) are adiabatic processes erates by taking one mole of a diatomic ideal gas through the cycle 1 -2-3-4-1 as shown Pressure (KPa) in the pV diagram below. (T4 = 400K) 2 (T2 = 300K) 1 (T, = 200K) Volume (m3 ) A. B. C. D. Hot Reservoir Hot Reservoir Hot Reservoir Hot Reservoir 6.24KJ 6.24 KJ 8.73 kJ 8.73 kj 5.82 k 2.08 kJ 4.16 kJ 2.91 kl 4.16KJ 2.08 KJ 2.91 KJ 5.82 kJ Cold Reservoir Cold Reservoir Cold Reservoir Cold Reservoir