Question: Air flows into an insulated nozzle at 1MPa, 1200 K with 15 m/s and mass flow rate of 2 kg/s. It expands to 650 kPa

Air flows into an insulated nozzle at 1MPa, 1200 K with 15 m/s and mass flow rate of 2 kg/s. It expands to 650 kPa and exit temperature is 1100 K. Find the exit velocity, and the nozzle efficiency.

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