Generally for big and major dams,motors are alone not used,all this type dam gates will be controlled manually.Because it is not easy to conrol the large dam gates by motors.
But for the dams with single gates,used for irrigation purpose,in canals,we can use the synchronous reversible motors to control such type of dams.
Hydro energy
A dam is used to make an artificial lake in a river which can be used to generate hydroelectric power or as a reservoir.
Any modern dam has computer-controlled Gates which can be opened remotly by some switch/computer instruction . +++ All dams have had release valves, or "sluices", built into them, irrespective of the mode of control. They are used to maintain flow in the river downstream during short dry spells, to flush out accumulated silt or to drain the reservoir for repairs.
The Khaji, or also known as the Khaju, Bridge in Ifahan, Iran, is a masonry arch bridge that features sluice gates to allow it to function as a weir (a small dam) when wooden plates were inserted into notches present in the arched portions of the bridge underneath. So, the Khaji, or Khaju, Bridge is a masonry arch bridge that also functions as a dam or weir.
There are 14 dams in Pakistan. They are:-Akhori Dam-Donhngi Dam-Ghazi Barotha Dam-Gomal Dam-Gomal Zam Dam-Hub Dam-Kalabagh Dam-Karoonjhar Dam-Khanpur Dam-Mangla Dam-Mirani Dam-Shakidor Dam-Simly Dam-Tarbela DamOther names that came up under 'Dams in Pakistan are':-Guddu Barrage-Indus Basin Project-Rawal Lake-Sukkur Barragehttp://wiki.answers.com/What_are_the_names_of_the_various_dams_in_Pakistan#ixzz19cbuQFaG
A barrage is a type of dam that uses gates to control the level of water. They were built to divert water or to dam a lagoon.
There are 64 sluice gates and 34 crest gates at the Hirakud dam for discharge of excess water, officials said.
27 gates
There are 64 sluice gates and 34 crest gates at the Hirakud dam for discharge of excess water, officials said.
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A dam is used for hydroelectric energy.
There are 64 sluice gates and 34 crest gates at the Hirakud dam for discharge of excess water, officials said.
Any dam will raise the water level behind it.
The Aswan dam is an embankment dam.
Arch dam
It acts like a safety valve or dam with gates in a sense
ambot lang oi