2007-04-12 07:06:13 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
power converted from the gravitational potential energy of water behind a dam.
2007-04-12 07:09:09 · answer #1 · answered by Lavrenti Beria 6 · 0⤊ 0⤋
Actually, hydroelectric and coal-fired power plants produce electricity in a similar way. In both cases a power source is used to turn a propeller-like piece called a turbine, which then turns a metal shaft in an electric generator , which is the motor that produces electricity. A coal-fired power plant uses steam to turn the turbine blades; whereas a hydroelectric plant uses falling water to turn the turbine. The results are the same.
The theory is to build a dam on a large river that has a large drop in elevation (there are not many hydroelectric plants in Kansas or Florida). The dam stores lots of water behind it in the reservoir. Near the bottom of the dam wall there is the water intake. Gravity causes it to fall through the penstock inside the dam. At the end of the penstock there is a turbine propeller, which is turned by the moving water. The shaft from the turbine goes up into the generator, which produces the power. Power lines are connected to the generator that carry electricity to your home and mine. The water continues past the propeller through the tailrace into the river past the dam. By the way, it is not a good idea to be playing in the water right below a dam when water is released!
2007-04-12 07:14:32 · answer #2 · answered by theomega76 2 · 0⤊ 0⤋
Hydroelectric power is generated at a dam and the water pressure turns the generator.
2007-04-12 08:47:20 · answer #3 · answered by JOHNNIE B 7 · 0⤊ 0⤋
Hydroelectric power : Turbine electric generator is derived by flow of water. The water has potential energy that by gravity comes down drive the turbine. The turbine turn the electric generator then the electric comes out
2007-04-12 07:15:40 · answer #4 · answered by sastro 5 2 · 1⤊ 0⤋
Hydoelectric power is the power obtained from the water . Typically u can see it at a dam , when the water falls on the blades of the turbine and makes it to rotate thus this rotation drives a generator , which in turn provides u with electric power .
2007-04-13 06:57:01 · answer #5 · answered by vaibhav_144 2 · 0⤊ 0⤋
Electric power that is produced from the pressure of water behind a dam, turning a turbine, moving an electric generator.
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2007-04-12 07:10:40 · answer #6 · answered by tlbs101 7 · 0⤊ 1⤋
Hydro-electric power is: -
The production of elecricity by using the tremendous Kinetic Energy contained in the water flowing from a dammed lake (Potential energy), high above the power station.
The kinetic energy is used to drive large water turbines (K.E. converts to mechanical energy).
The turbines drive power generators that convert the mechanical energy into electrical energy.
'Hydro' ..refers to water. 'Electric' refers to power.
Hydro-electric power station.
2007-04-12 10:07:00 · answer #7 · answered by Norrie 7 · 0⤊ 0⤋
READ UP ON HOOVER DAM, and all your questions will be answered.
Learn to use your tools efficiently, try searching..that will help.
2007-04-13 07:28:31 · answer #8 · answered by Riyaz B 1 · 0⤊ 0⤋