Steam undergoes an isentropic expansion process at 80 bar, 440°C enters a piston-cylinder assembly operating at steady state with mass flow rate 20 kg/s. It exits with a pressure of 0.7 bar and a quality of 95%, assume the process is adiabatic, neglect kinetic and potential energy. a. Determine the final temperature.
b. Determine the power developed in kW.
c. Plot T-s diagram

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

What precautions should you take to prevent injuries when dealing with heavy loads?

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.