Air enters an adiabatic nozzle at 250 kPa and 700 K with a very low velocity and exits at 500 m/s. If the isentropic efficiency of the nozzle is 90%, determine the exit temperature in Kelvin. Assumptions: 1. Ideal gas 2. Exact Analysis (Variable specific heat) 3. Inlet velocity=D0

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A: Given:

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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.