Wind entering in a wind mill with a velocity of 20 m/sec facing area of the windmill is 10m 2 and density of air is 1.2 kg/m 3 . If wind energy is converted into electrical energy with 33.3% efficiency, then find electrical power produced by the wind mill in kw.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(16)
Sol. Energy entering in the windmill
= 
mv 2
P in = 
= 
P in = 
( ρ AV) = 
ρ A V 3
Electrical power output
P out = 
P out = 
= 
P out = 16 kW.
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