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Mar.29,2006
Renewable Energy Help-Windmills, 10 points for best answer..!?
4. Solar energy can be used to
heat homes
provide electricity
both of the above
5. On a wind turbine, the ______ is used to shut down the blades if wind speed gets too high.
anemometer
yaw drive
controller
6. Which part of a wind turbine keeps the generator facing the wind direction?
turbine
yaw drive
anemometer
7. Relying on windows and building materials to capture incoming solar radiation WITHOUT distributing that energy is called
photoelectric heating
passive solar heating
active solar heating
8. The biggest drawback to using hydrogen fuel is that hydrogen does not naturally exist in its elemental form, and must be extracted from something else.
True
False
10. Which of the following is a disadvantage of wind power?
low Energy Efficiency
increased air pollution
backup systems may be needed for times of low winds
4 = both of the above.
5 = If by controller you mean the control system (computer or PLC’s) then that is the answer, neither of the others is correct
6 = The yaw drive, in conjuction with the wind vane.
7 = Passive solar heating
8 = False. Biggest drawback is that there is not distribution system for Hydrogen.
10 = Backup systems required.
3 Build Wind Turbines out bike parts and Treadmills
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