The following data is available for a steam power station:

maximum demand = 25 MW

Load factor = 0.4

Coal consumption = 0.88 kg/kWh

Boiler efficiency = 85%

Turbine efficiency = 90%

Price of coal = Rs. 55 per tones

Find the thermal efficiency of the station.

1. 65.2%

2. 76.5%

3. 99.8%

4. 62.32%