At a hydroelectric power plant, water is directed at high speed against turbine blades on an axle that ...?
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Dead stop.  If it rebounds, it slows the following water, reducing spin.
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Electricity...Water is life!
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A rodete consists of a number of curved blades inbetween two metal plates. The water enters by eye of the rodete and is dragged by the blades and sent in radial direction. This acceleration produces an appreciable increase in pressure and kinetic energy.
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Yes\n1. Work done against the surface of the water\nplus\n2. Work done on displacing water.
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A turbind spins in a flat trajectory parallel to the land and generates electricity. A windmill spins vertically and does not develop a rapid speed, but is used to primarily grind grain.
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Ján Andrej Segner developed a reactive water turbine in the mid-1700s. It had a horizontal axis and was a precursor to modern water turbines. It is a very simple machine that is still produced today for use in small hydro sites. Segner worked with Euler on some of the early mathematical theories of turbine design.\n\nThe word turbine was coined by the French engineer Claude Bourdin in the early 19th century and is derived from the Latin word for "whirling" or a "vortex". The main difference between early water turbines and water wheels is a swirl component of the water which passes energy to a spinning rotor. This additional component of motion allowed the turbine to be smaller than a water wheel of the same power. They could process more water by spinning faster and could harness much greater heads. (Later, impulse turbines were developed which didn't use swirl).\n\n\nthis is all that I know I dont know who or what a barkers turbine is and I did a search on Google just to see what it was that I dont know about and it came up nill. So check into what you need and get back to me.\n\nBri
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since submerged give you more resistance, the turbine run slower at the same power compare to one that's not.
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These are components (for example) of steam power plants (stationary and marine).  Engineering Handbooks (Marks' Mechanial Engineers' Handbook, etc.) should provide definitions and perhaps examples of steam, air and water pressure reducers and steam desuperheaters.  Visit any large library and ask at the Reference Desk for technical handbooks (or any other books re' steam power plants).\n\nEngineers would contact manufacturers for detailed product information before specifying equipment.\n\nGood luck.
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Are you referring to hydroelectric power?\n\nWater behind the dam is stored energy called potential energy because it has the potential to do work, but isn't doing any work at the moment.  As the water flows down through the turbines of the hydroelectric plant, it is kinetic energy, or energy that is actually doing work.\n\nThe turbine spins a generator, which is connected to the power grid through transformers.\n\n\nA newer, experimental variant of hydroelectic power is using large volumes of water in man-made, elevated lakes to store energy.  During non-peak usage periods, such as late at night, electric pumps will pump water into these lakes.  Then, during peak usage periods, during the day (particularly the afternoon), the water is allowed to flow down through pipes to turbines to generate electricity again.   It's not a very efficient system, but does offer a possible way to store electricity until it's needed.
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A turbine is a rotary engine that extracts energy from a fluid flow.\nso how many type of turbine are there now are exactly the same as how many liquids are.\nBasically based of fluids type there are water, gas, steam and wind turbines.\nTurbines are also categorized by another means. You can visit wikipedia.\nHope this help.
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razor may be thinking of a Darrieus machine which does have a vertical spin axis. But a downwind turbine has a normal fan-type rotor whose blades are on the lee side of the support mast (ref.). If built without excessive nacelle area on the windward side, this just naturally yaws in the proper direction due to the wind force on the rotor driving it leeward. Another advantage is that the rotor can be more flexible because collision with the mast is normally not possible. However as the ref. points out, there are also disadvantages to this design, including cyclic blade loads due to the support's wind shadow.
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http://www.karun3.com/technical/?item=7\nhttp://www.karun3.com/related%5Finfo/about%5Fhydro/hydropower%5Fmachinery/
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As the water starts to circle, it is thrown to the outside, due to centrifugal force (to be more accurate, the force that it experiences is centripetal force=(mv^2)/r since centrifugal force is a so-called fictitious force). As it's thrown outside, it starts to move faster (when things move in a circle, the things that are nearer the outside move faster than things near the center; you can see this if you have a "old-fashioned" record player by putting two coins on it, one near the center and one near the outer edge and trace how long it takes them to complete the lengths of their paths). So the circling water near the outer rim is moving very fast and experiences bigger forces (since the force is proportional to velocity). But the water near the middle is moving slower because it's being dragged along the bottom and so ends up slowing down much more. Since the water near the bottom is moving so slowly, it exhibits a much lower centrifugal force and so there is little to no centrifugal force near the bottom (or middle). This is why you have a whirlpool (vortex): the water near the top is pushed out more (since there's higher centrifugal force there) and the water near the bottom is hardly pushed outward at all (since there's lower centrifugal force near the bottom to push it out).
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The water provides resistance.
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As you push the mower the wheels drive a gear that causes the reel to spin rapidly. The reel is composed of sharpened curved blades that are aligned to swish past a fixed flat metal edge. When grass sticks up into the blades, it gets caught between the curved moving blade and the fixed one and is sheared off.\n\nScissors work the same way as the blades do - they shear the object being cut.
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Jet engines work on Newton's 3rd law. Throw sometihng back with a certain force and you will be propelled by that same force.\n\nNow, by continuity eqn, Av = A'v'\n\nIf you throw something out of a small area at a high velocity, the rate of flow in the opposite direction is then proportional.
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Probably sonic flow of gas relative to leading edges of compressor blades (guess)