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Sources of Energy — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceSources of Energy1 Mark
MCQ
The power generated in a windmill.
  • A
    Is more in rainy season since, damp air would mean more air mass hitting the blades.
  • B
    Depends on the height of the tower.
  • ✓
    Depends on wind velocity.
  • D
    Can be increased by planting tall trees close to the tower.
✓

Answer

Correct option: C.
Depends on wind velocity.
Wind power converts the kinetic energy in wind to generate electricity or mechanical powe. As the wind passes the turbines it moves the blades, which spins the shaft. There are currently two different kinds of wind turbines in use, the Horizontal Axis Wind Turbines $\ce{(HAWT)}$ or the Vertical Axis Wind Turbines $\ce{(VAWT)}.$

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