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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?

Convert wind energy to mechanical power for pumping water Signup and view all the answers

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

Higher efficiency than Vertical Axis Rotors Signup and view all the answers

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

Dependent on wind direction 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?

3 m/s Signup and view all the answers

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

59% Signup and view all the answers

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

Clean and does not cause pollution Signup and view all the answers

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

Site specific and applicable only in areas with wind speed of 3 m/s or higher Signup and view all the answers

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

Localizing technology Signup and view all the answers