The document contains 4 multi-part engineering problems related to thermodynamics. Problem 1 asks about the mass and entropy change of steam in a tank heated from an initial quality of 30% to saturated vapor. Problem 2 asks about the exit temperature and power output of an adiabatic steam turbine. Problem 3 asks about the reversible power, exergy destroyed, and efficiency of a steam turbine given input/output conditions and heat loss. Problem 4 asks about temperatures, work, and efficiency of a Brayton cycle air turbine given temperatures and efficiencies.