Wind Pump Basics
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Questions and Answers

What causes wind to develop according to the text?

  • Underground pressure variation
  • Magnetic field interaction
  • Atmospheric temperature difference (correct)
  • Oceanic currents

What is the formula for kinetic energy produced by the wind?

  • $E = ma/2 V$
  • $E = 3/2 ma V$
  • $E = ma V^2$
  • $E = ½ ma V^2$ (correct)

Which monsoon season in the Philippines has maximum wind intensity in August?

  • Both monsoon seasons equally
  • No specific monsoon season mentioned
  • Southwest Monsoon from June to September (correct)
  • Northeast Monsoon from October to April

What is the function of a windpump?

<p>Convert wind energy to mechanical power for pumping water (C)</p> Signup and view all the answers

What is a characteristic of Horizontal Axis Rotors for wind pumps?

<p>Higher efficiency than Vertical Axis Rotors (B)</p> Signup and view all the answers

What is a disadvantage of Cross-Wind Rotors for wind pumps?

<p>Dependent on wind direction (C)</p> Signup and view all the answers

At what wind speed does the wind power per square meter per cross-sectional area of the windpump rotor reach about 9W/m2?

<p>3 m/s (D)</p> Signup and view all the answers

What percentage of the wind kinetic energy can a windpump typically extract without a complicated guiding device?

<p>59% (C)</p> Signup and view all the answers

What is one advantage of wind energy systems mentioned in the text?

<p>Clean and does not cause pollution (B)</p> Signup and view all the answers

What is one limitation of wind energy systems mentioned in the text?

<p>Site specific and applicable only in areas with wind speed of 3 m/s or higher (D)</p> Signup and view all the answers

What does a windpump technology need to reduce investment cost according to the text?

<p>Localizing technology (D)</p> Signup and view all the answers

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