The critical pressure ratio ( p_2p_1 ) is given by

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Steam Boilers, Engines, Nozzles and Turbines

The critical pressure ratio $$\left( {\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}}} \right)$$ is given by

A) $$\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}} = {\left( {\frac{2}{{{\text{n}} - 1}}} \right)^{\frac{{\text{n}}}{{{\text{n}} + 1}}}}$$ B) $$\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}} = {\left( {\frac{2}{{{\text{n}} + 1}}} \right)^{\frac{{\text{n}}}{{{\text{n}} - 1}}}}$$ C) $$\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}} = {\left( {\frac{{{\text{n}} - 1}}{2}} \right)^{{\text{n}} + \frac{1}{{\text{n}}}}}$$ D) $$\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}} = {\left( {\frac{{{\text{n}} + 1}}{2}} \right)^{{\text{n}} - \frac{1}{{\text{n}}}}}$$

Answer & Solution

Correct Answer: Option B

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The critical pressure ratio $$\left( {\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}}} \right)$$ is given by

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