In a steam power station, the power developed by a turbine is 1665 kJ/kg. The heat supplied to the boiler is 3958 kJ/kg. The feed pump work required to pump the condensate back into the boiler is 15 kJ/kg. The Rankine cycle efficiency of the steam power station will be:
1
47.06%
2
23.77%
3
23.98%
4
41.68%
5
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