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

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

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Generation of Electrical Energy
In a regenerative feed heating cycle, the optimum value of the fraction of steam extracted for feed heating

Increases with increase in Rankine cycle efficiency
Decreases with increase in Rankine cycle efficiency
None of these
Is unaffected by increase in Rankine cycle efficiency

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Generation of Electrical Energy
Rankine cycle operating on low pressure limit of p1 and high pressure limit of p2

Has lower thermal efficiency than Carnot cycle operating between same pressure limit
May be more or less depending upon the magnitude of p1 and p2
Has same thermal efficiency as Carnot cycle operating between same pressure limits
Has higher thermal efficiency than the Carnot cycle operating between same pressure limits

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