## Question

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

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

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