A Thermal station has following data:
Boiler efficiency = 75% Electrical Efficiency = 50% Turbine efficiency = 80%
Calculate overall efficiency of the plant.

Correct option is B

Boiler efficiency  =75%,
 Electrical Efficiency  =50%
 Turbine efficiency  =80%
 Overall Efficiency  = Boiler efficiency  × turbine efficiency  × generator efficiency 
=0.75×0.5×0.80
=0.30 =30%