The data listed below are claimed for power cycles operating between hot and cold reservoirs at 1000 k and 400 k, respectively. for each case determine whether such a cycle is in keeping with the first and second laws of thermodynamics. (a) qh 5 300 kj, wcycle 5 160 kj, qc 5 140 kj. (b) qh 5 300 kj, wcycle 5 180 kj, qc 5 120 kj. (c) qh 5 300 kj, wcycle 5 170 kj, qc 5 140 kj. (d) qh 5 300 kj, wcycle 5 200 kj, qc 5 100 kj.

1kg of water contained in a piston-cylinder assembly undergoes two processes in series from an initial state where the pressure is 3.0 bar and the temperature is 150°c process 1-2: the water is compressed isothermally to a volume of 0.25 m^3 with 120 kj of work being done to the system. process 2-3: the water is heated at constant volume to a final pressure of 10 bar. a. find the change in internal energy for the system. b. calculate the amount of heat transferred, in kj. c. sketch both processes on a t-v diagram. (196.33 kj/kg, 76.33 kj)