SSE JE Electrical Engineering 24 March 2021 Shift 2 Paper

Question : 122 of 200

Marks: +1, -0

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.

65.2%
76.5%
99.8%
62.32%

Validate

Solution:

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
From concept,

\η_\T=0.85×0.9=0.765

= 76.5 %

(In percentage)

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