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The windmill (wind turbine):

When the blowing __________ strikes across the __________ of a windmill, it exerts a force on them due to which the blades of the windmill start _____________. This in turn rotates the shaft of the turbine and ___________ ___________.

Wind turbines are used to __________ electricity. The machines that generate electricity are the most conventional type with airfoil _____________ employing two to three tapered blades. Electricity can be produced by rotating an armature in between the poles of a strong ______________. The shaft of the armature of a generator is connected to the wind turbine by a connecting ________. When the wind rotates the blades of the wind turbine, the shaft rotates, and this in turn rotates the armature, thereby producing electricity.

Fill in the blanks thanks to the following words: propeller – rod – generates – wind – magnet – blades – electricity – rotating – produce

http://www.canadiangeographic.ca/atlas/themes.aspx?id=windenergy&sub=windenergy_basics_turbines&lang=En

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http://blog.modernmechanix.com/2007/07/27/chinese-windmill-waters-farm/

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Hydroelectric power

Fill in the blanks thanks to the following words:

renewable – dams – to release – potential – to generate – water – to pollute – energy – to convert – to produce – to connect – to turn

Electricity is produced by converting the ___________ energy of __________ (from a height) into the kinetic __________ of flowing water. Hydroelectricity or hydroelectric power is produced, when large quantities of water stored in __________ at a suitable height, are __________ to fall from a height. A dynamo is connected to a waterwheel or turbine and the kinetic energy of the flow of water turns this wheel, there by ____________

hydroelectric power. Hydroelectric power is a non-__________ and ____________ source of energy.

http://www.rise.org.au/info/Tech/hydro/large.html#how

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Explanation for Making of Hydroelectric Power

Construction of reservoir or dam: In order to use the kinetic energy of ______________________________

________________________________________________________________________________________

________________________________________________________________________________________

Penstocks

: Penstocks are the pipes of larger diameter that will carry the stored water from the dam to strike

on to the turbines. The kinetic energy of the water ________________________________________________

________________________________________________________________________________________

Turbines

: When the forced water, from the pen stocks, ___________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

Generator house: Generator House is the house of generators. The turbines are directly ________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

Power transmission

: __________________________________________________________________________

_________________________________________________________________________________________________

_________________________________________________________________________________________________

_________________________________________________________________________________________________

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