An adiabatic air (ideal gas with P = 5O0kPa T, = 200°C V, = 100 m/s constant specific heats) nozzle operates with conditions shown in P, = 100kPa T = 150°C the figure. Determine the velocity at the exit section in m/s.

Q4: A diffuser, has air entering at 100 kPa, 280 K, with a velocity of 200 m/s. The inlet cross-sectional area of the diffuser is 100 mm2. At the exit, the area is 860 mm2, and the exit velocity is 20 m/s. Determine the exit pressure and temperature of the air. Take Cp=1.005 KJ/kg.K OA: 280 K OB: 300 K OC: 320 K D: 340 K

Entropy and ideal steady devices 1. H2O flows through a reversible adiabatic turbine. The inlet condition is 1000 F and 400 psia. The outlet condition is 10 psia. The turbine produces 100 hp. Neglecting kinetic and potential energy a. Draw the process curve on a T-s diagram. Show the saturation dome and label the inlet and exit states b. Find the enthalpy and entropy at the inlet c. Find the enthalpy at the exit d. Compute the mass flow rate e. Compute the rate of entropy generation

Five kilogram of steam is initially at 1MPa and y=40% inside the piston cylinder. There is a 50C superheat introduced in steam isopiestically. Find the change of entropy of the steam.