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Rotating Electric Lamp
Why is a generator armature more difficult to rotate when it is connected to and supplying electric current?
1. Why is a generator armature more difficult to rotate when it is connected to and supplying electric current to a circuit.
2. Some bicycles have electric generators that are made to turn when the bike wheel turns. These generators provide energy for the bike’s lamp. Will a cyclist coast farther if the lamp connected to the generator is turned off?
1. Because the generator is pulling energy from the mechanical motion and changing it into electrical energy. It can only do this when there is an electrical load connected.
When I was in electrical engineering school, I found this very surprising - we had a hand crank generator that you could connect loads to. It really made me understand.
2. Yes - from long experience I can tell you the cyclist can feel the drag of the generator.
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Rotating Rays Lamp. $14.99 Get the party started with this fabulous Rotating Rays lamp which projects colourful patterns of multi coloured lights into the room. Wall mountable.Silver gloss finish.Size H12, W12, D6.5cm.Diameter 12cm.LED (included).EAN/MPN/UPC/ISBN: 047162118198. |
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Florida Marlins Rotating Lamp $52.99 Light up the room on game day with this Florida Marlins Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLB |
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Arizona Diamondbacks Rotating Lamp $52.99 Light up the room on game day with this Arizona Diamondbacks Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLB |
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Baltimore Orioles Rotating Lamp $52.99 Light up the room on game day with this Baltimore Orioles Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLB |
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Seattle Mariners Rotating Lamp $52.99 Light up the room on game day with this Seattle Mariners Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLB |
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Milwaukee Bucks Rotating Lamp $52.99 Light up the room on game day with this Milwaukee Bucks Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by the NBA |
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Memphis Grizzlies Rotating Lamp $52.99 Light up the room on game day with this Memphis Grizzlies Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by the NBA |
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Texas Rangers Rotating Lamp $52.99 Light up the room on game day with this Texas Rangers Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLB |
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Washington Nationals Rotating Lamp $52.99 Light up the room on game day with this Washington Nationals Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLB |
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Columbus Crew Rotating Lamp $52.99 Light up the room on game day with this Columbus Crew Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLS |
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Chicago Fire Rotating Lamp $52.99 Light up the room on game day with this Chicago Fire Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLS |
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Vancouver Canucks Rotating Lamp $52.99 Light up the room on game day with this Vancouver Canucks Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by the NHL |
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Sacramento Kings Rotating Lamp $52.99 Light up the room on game day with this Sacramento Kings Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by the NBA |
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Toronto Raptors Rotating Lamp $52.99 Light up the room on game day with this Toronto Raptors Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by the NBA |
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Utah Jazz Rotating Lamp $52.99 Light up the room on game day with this Utah Jazz Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by the NBA |
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Cincinnati Bengals Rotating Lamp $52.99 Light up the room on game day with this Cincinnati Bengals Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by the NFL |
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Colorado Rapids Rotating Lamp $52.99 Light up the room on game day with this Colorado Rapids Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLS |
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D.C. United Rotating Lamp $52.99 Light up the room on game day with this D.C. United Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLS |
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FC Dallas Rotating Lamp $52.99 Light up the room on game day with this FC Dallas Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLS |
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Houston Dynamo Rotating Lamp $52.99 Light up the room on game day with this Houston Dynamo Rotating Lamp. Features translucent tube that rotates around a light bulb. Stands nearly 12 inches high Tube is covered in team graphics and team color Perfect your home- office- bar- den- or bedroom Officially licensed by MLS |
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video0~3.avi 220v motor give alternator speed
Electricity generation explained
Although static electricity is present in nature, in thunderclouds, nerve endings, and brains, there is no way at present to harness this in such a way that it could provide a steady flow of electricity to power appliances.
Though electricity is a far more versatile form of energy, it cannot be tapped directly from nature, and has to be generated using the energy created from a primary energy source, such as burning coal or splitting uranium atoms. For this reason, it is referred to as being a secondary source of energy.
A couple of hundred years ago, the energy needs of the average household were met by primary energy devices such as kerosene lamps, coal fires, and cold stores.
Nowadays, electricity is so much a part of our daily life that we rarely think about what life would be like without it, except in the rare instance of a power cut. The reason for its ubiquity is that it is by far the most versatile and convenient energy source available, and can be used to power virtually any type of appliance, from a computer to a refrigerator.
The principle behind the modern electric generator is still the same as that pioneered by Michael Faraday in the 1830s, when he discovered that turning a magnet inside a coil of wire induced a current in the wire.
It was not until the far more powerful electromagnet came on the scene later in the 19th century that large scale electrical generation based upon this principle could become a workable reality.
The generators used in modern power stations utilise a huge electromagnet rotating inside a series of insulated coils, inducing a current in each one, which is then summed into a far larger current when those coils are joined at the end of the circuit.
These giant electromagnets are not going to rotate themselves, however, and require the energy for movement to come from a secondary source such as a steam turbine or a windmill. Typically, a power plant can achieve an energy efficiency of around 35%, meaning that only just over a third of the energy used to create the electricity is actually turned into electrical energy.
The majority of power stations use turbines, which are essentially large water wheels that are propelled by jets of steam produced by heating water with coal, gas, petrol, or nuclear power.
About the Author
Switch to British Gas today, on average cheaper than all other electricity companies. In fact, they are the cheapest electricity supplier on average in the United Kingdom.
