Generation of Electrical Energy
The draught produced, for a given height of the chimney and given mean temperature of chimney gases

remains the same irrespective of outside air temperature
may increase or decrease with increase in outside air temperature
increases with increase in outside air temperature
decreases with increase in outside air temperature

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Generation of Electrical Energy
In a regenerative surface condenser

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

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