Question

The blades of a wind mill sweep out a circle of
area A. If wind flows with velocity v perpendicular
to blades of wind mill and its density is p, then
the mechanical power received by wind mill is
PAV3
(1) PAV
(2) PAV?
(3) PAV?
(4) 2pAv2​

Answer 1

The blades of a windmill sweep out a circle of area A. (a) If the wind flows at a velocity v perpendicular to the circle, what is the mass of the air passing through it in time t?(b) What is the kinetic energy of the air? (c) Assume that the windmill converts 25% of the wind’s energy into electrical energy, and that A = 30 m2, v = 36 km/h and the density of air is 1.2 kg m–3. What is the electrical power produced? | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-6 Work, Energy And Power

Answer 2

Answer:

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