# Small Stage Efficiency of a Gas Turbine and Rearranging Equations

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6. The overall efficiency of a gas turbine can be calculated from the formula

.....

where is the small stage efficiency and E =..., where r is the

expansion pressure ratio and gamma is the ratio of the specific heats. Given that the overall efficiency nf is 76%, r = 4.6 and that y = 1.333, calculate the value of the small stage efficiency nf.

7. Transform the formula

....

to make n the subject.

8. Rearrange the equation ..... to obtain a formula for q.

See attached file.

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#### Solution Summary

Small Stage Efficiency of a Gas Turbine and Rearranging Equations are investigated.

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