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A steam power plant has the boiler efficiency of 92%, turbine efficiency (mechanical) of 94%, generator efficiency of 95% and cycle efficiency of 44%. If 6% of the generated power is used to run the auxiliaries, the overall plant efficiency is
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- 34%
- 39%
- 45%
- 30%
Correct Option: A
η0 = ηb × ηm × ηs × ηc | 1 - ηa)
= 0.92 × 0.94 × 0.95 × 0.44r × (1 – 0.06)
η0 = 34%
