The nozzles of a simple impulse steam turbine are inclined at an angle of 20° to the direction of the path of the moving blades and steam leaves the nozzles at 375 m/s. speed is 165 m/s. the blades are such that there is no axial thrust on them, and the velocity of the steam passing over them is reduced by 15%

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?