If n the polytropic index of compressor and \[\frac{{{p}_{2}}}{{{p}_{1}}}\] is the pressure ratio for a three-stage compressor with ideal intercoolling, the on total work of three stage is:

\[\frac{3n}{(n-1)}{{p}_{1}}{{v}_{1}}\,\left\{ {{\left( \frac{{{p}_{2}}}{{{p}_{1}}} \right)}^{(n-1)/n}}-1 \right\}\]

\[\frac{n}{(n-1)}{{p}_{1}}{{v}_{1}}\,\left\{ {{\left( \frac{{{p}_{2}}}{{{p}_{1}}} \right)}^{(n-1)/n\,3}}-1 \right\}\]

\[\frac{n}{(n-1)}{{p}_{1}}{{v}_{1}}\,\left\{ {{\left( \frac{{{p}_{2}}}{{{p}_{1}}} \right)}^{(n-1)/n}}-1 \right\}\]

\[\frac{3n}{(n-1)}{{p}_{1}}{{v}_{1}}\,\left\{ {{\left( \frac{{{p}_{2}}}{{{p}_{1}}} \right)}^{(n-1)/\,3\,n}}-1 \right\}\]

If n the polytropic index of compressor and \[\frac{{{p}_{2}}}{{{p}_{1

1.	If n the polytropic index of compressor and \[\frac{{{p}_{2}}}{{{p}_{1}}}\] is the pressure ratio for a three-stage compressor with ideal intercoolling, the on total work of three stage is:
A.	\[\frac{3n}{(n-1)}{{p}_{1}}{{v}_{1}}\,\left\{ {{\left( \frac{{{p}_{2}}}{{{p}_{1}}} \right)}^{(n-1)/n}}-1 \right\}\]
B.	\[\frac{n}{(n-1)}{{p}_{1}}{{v}_{1}}\,\left\{ {{\left( \frac{{{p}_{2}}}{{{p}_{1}}} \right)}^{(n-1)/n\,3}}-1 \right\}\]
C.	\[\frac{n}{(n-1)}{{p}_{1}}{{v}_{1}}\,\left\{ {{\left( \frac{{{p}_{2}}}{{{p}_{1}}} \right)}^{(n-1)/n}}-1 \right\}\]
D.	\[\frac{3n}{(n-1)}{{p}_{1}}{{v}_{1}}\,\left\{ {{\left( \frac{{{p}_{2}}}{{{p}_{1}}} \right)}^{(n-1)/\,3\,n}}-1 \right\}\]
Answer» E.

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If n the polytropic index of compressor and \[\frac{{{p}_{2}}}{{{p}_{1}}}\] is the pressure ratio for a three-stage compressor with ideal intercoolling, the on total work of three stage is:

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