Q. 393.6( 5 Votes )
A large coal-fire
(a) Electrical energy produced by coal-fired plant,
Electrical energy produced by wind turbine
No. of wind turbine required,
= 2000x106/300x103 = 6666.6
Hence, 6667 wind turbines would be needed to replace the power station.
(b) In actual practice, this no. of wind turbines could not replace the coal-fired power plant because the efficiency of wind turbines keeps changing due to changes in wind speed but the efficiency of steam turbines used in coal-fired power stations remains the same.
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