3. Water vapor enters a turbine at p = 4 bar, T1 = 200°C and exits at p2 = 1 bar with a quality of 98%. Kinetic and Potential energy effects can be neglected. Determine for the turbine (a) the work developed per unit mass of steam flowing, in kJ/kg, (b) the amount of entropy produced per unit mass of steam flowing, in kJ/kg K, and (c) the isentropic turbine efficiency. (d) Draw the T-S diagram

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Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.