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What the advantage of compensating winding for direct-current generators?
compensating winding is the one which is connected in series with armature winding & current flows in reverse direction to that of in armature .therefore the flux produced by this winding is such that to compensate armature reaction(effect of armature flux on main flux).hence voltage drop due to armature reaction reduces so terminal voltage of dc generator increases
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They will first allow the banker to balance its books. The bank is said to be in "balance". It will also allow for proper reconcilliation of related, offsettng accounts. A hyp…otication is levveraged debt by pledging a note and bank asset as collateral for a loan. For example, a $1,000 CD can stand as the assurance for a $1,000 loan. Bank regulators are less concered with the credit of the borrower for an obligation secured by compensating balances which is a compensating collateral account or certificate of deposit.
compensating windings are used to overcome armature reaction
Winds generally come from different directions depending where you are on the planet. The equator to 30oN the wind blows from the north east. The equator to 30oS t…he wind blows from the south east. 30oN to 60oN the wind blows from the west. 30oS to 60oS the wind blows from the west. if you are further than 60o North or South, the wind blows from the pole. a diagram that illustrates why winds blow this way is linked here. http://en.wikipedia.org/wiki/File:Earth_Global_Circulation.jpg Ocean currents have no general flow, there are two different types, surface and deep ocean currents. Surface currents are linked here: http://en.wikipedia.org/wiki/File:Ocean_surface_currents.jpg The thermohaline current is a current that circulates warm water and cool water (thermo) as well as differently concentrated salt waters (haline) http://en.wikipedia.org/wiki/File:Thermohaline_Circulation_2.png
Winds tend to flow from west to east across the globe. However, other types of winds, such as trade winds over oceans, flow opposite to the main jet stream winds.
Tidal generators have the advantage over wind turbines in that the tides are regular and can thus be relied upon. For the tides to stop would mean the loss of Earth's moon - w…hich is a wee bit unlikely to happen any time soon. Conversely, wind turbines rely upon the movement of air sufficient to turn the blades, and this cannot be relied upon.
Here are a few of the advantages: 1. We can generate cleaner energy to keep the earth clean. 2.We can generate energy more efficiently. 3.We can …preserve our fossil fuels because they take millions of years for the Earth to make. Actually, none of those really occur and there is also millions of dead birds and bats. Wind systems are based on 28 mph average speed. If the wind goes over this, they shut down, under and power is cubically reduced. At 14 mph, wind gives us 10% and at 11 mph and it shuts down again. As a result fossil fuel plants run at 100% of rated to compensate for wind variables. The expected life of a wind system is shorter then the payback time. That means they actually are expected to cost us energy. They produce less energy then the energy it takes to build one! Hardly a good thing, but they feel so good.
Biggest advantage is that wind energy is free and renewable and does not release carbon dioxide into the atmosphere. Biggest disadvantage is that the wind does not always blow….
Under what conditions is it advantageous to generate alternating current in preference to direct current?
You can step up or step down an AC voltage -- power transmission without excessive energy loss. You can store AC energy in a passive element, requiring no batteries. AC signal… can propagate in air/space (wireless communication). You can moderate AC signals (FM, AM). You can store a lot of information in AC signals.
What are some of the advantages and disadvantages of using the wind as a source for generating electricity?
Advantages Like hydroelectric power - wind power uses the energy of nature and is what is called free energy. It is also clean in that it doesn't have pollution as a …waste product. Disadvantages Initial cost of wind turbines is a major investment, as is maintenance, but those cost are coming down. Is dependent on the vagaries of the weather. Either no wind or too much makes energy collection difficult, There is also a possible detriment in that as wind farms become more numerous that the weather patterns of a region may be affected by the slowing of the natural winds (something that cannot be avoided since windmills are powered by the wind which is slowed as a result). I know of no studies that would say that this is a good or a bad side effect. Other disadvantages would include the fact that fossil fuel plants remain running at almost full capacity to offset the wind variations. Thus no reduction in fossil fuel use or CO2 reduction. Millions of birds and bats are killed each year with existing systems. As the numbers increase, so will these fatalities. Wind systems rarely produce enough power to generate another wind system. Thus even if the fossil fuel plants were not running, wind itself produces less power then they take to build. Thus, they do not even qualify as green. They do allow a feel good to the whole idea, even though the overall is a negative affect on the planet.
The way the earth rotates
I have recorded that the wind usally blows west.
i want to know about the advantage and disadvantages
Tides happen with predictable regularity.