Generation of Electrical Energy
The overall efficiency of thermal power plant is equal to

Regenerative cycle efficiency
Carnot cycle efficiency
Bioler efficiency × turbine efficiency × generator efficiency
Rankine cycle efficiency

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Generation of Electrical Energy
In a regenerative surface condenser

There is no pump; the condensate gets removed by gravity
There are two pumps to remove air and condensate
There is one pump to remove air and condensate
There are three pumps to remove air, vapor and condensate

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