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TMC is a measurement of volume. It is an abbreviation of Thousand Million Cubic feet. This is equal to 283.17 megalitres.

TMC =Ten Million Cubic feet Million = 1000000( In new SI-International system -Mega-M)

Ten Million=10000000 1 feet = 12X 2.54 cm =30.48cm =0.3048m

1 cft = 1 feet X 1feet X 1feet = 0.3048 X 0.3048 X 0.3048 metre cube (m3)

1 m3 = 1/(0.3048 X 0.3048X0.3048) = 35.31466672 cft

1Mm3 =35.31466672X 1000000 cft

1 Mm3 =3.531466672 TMC

1TMC = 1/3.531466672 Mm3 = 0.283168465 Mm3 nearly = 0.28317 Mm3= 0.28317X 1000 M litres

1TMC =283.17 Mega litres

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Q: What is TMC in dam water level measurement?
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The what energy of water in a dam is increased by raising the level of water behind the dam?

Potential Energy


Why the base of the dam is made wider?

The pressure of the water against the top of the dam wall, is much less than the pressure exerted against the bottom of the dam wall. The width of a dam wall increases to compensate for the increased water pressures at the lower level.


Where does hydroelectricenergy come from?

From the power of falling water. Usually engineered to take advantage of a high dam where the water level inside the dam is kept at a high level. See the Boulder Dam for example. The water is fed through turbines which then drive electric generators. From the environmental viewpoint this is ideal as no greenhouse gases are evolved, and the energy is renewable. Also once the dam and equipment are built, there are no costs apart from general maintenance costs, and operating staff costs.


How is a hydro electric power station built?

A dam is built, normally across a river but sometimes across a lake or even the sea, in a suitable place. Anyway, once the dam is built, water cannot pass through so it builds up on one side - so that you have a dam with a high water level on one side and no water on the other. There are passages built into the bottom of the dam which contain turbines, and once the water level reaches a sufficient height these passages are opened and water can pass through from the 'high level' side to the 'no water' side (obviously). As the water goes through the passages it spins the turbines which in turn spin electrical generators, creating electricity.


What is hydraulic height as it relates to a dam?

The pressure that water exerts on the walls of the dam is proportional to the depth of the water or you might say the height of the column of water from the base of the dam. The hydraulic height is the same as the depth of the water to the bottom of the dam.