motion control are called drives and employ any of the prime movers such as diesel or petrol engines gas or steam engines hydraulic motors and electric motors for supplying mechanical energy for motion control. Drives employing electric motors are known as Electrical drives. Fig 1.1 Block diagram of an Electrical Drive The advancement in electric drive system is very much related to the development in the power semiconductor devices technology. The introduction of the Silicon Controlled Rectifier
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uniform E + + + + + + electric U = Fy = q0Ey a F=Eq0 E Wab = Fd = q0Ed d b ya yb ‒ ‒ ‒ ‒ ‒ ‒ = ‒ ΔU = ‒ (Ub ‒ Ua) F does positive work‚ U decreases positive charge moving in the opposite direction of uniform E + + + + + + electric U = Fy = q0Ey b Wab = Fd = q0Ed d E yb a ya F=Eq0 ‒ ‒ ‒ ‒ = ‒ ΔU = ‒ (Ub ‒ Ua) ‒ ‒ F does negative work‚ U increases negative charge moving in the direction of uniform E + + + + + + electric F=Eq0 U = Fy = q0Ey a Wab
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NOTE: This paper explains the theory and uses of the electric generator‚ and explains the differences between AC and DC generators. It also includes a glossary and a bibliography. --------------------------------------------------- ELECTRIC GENERATORS In its most basic definition‚ an electric generator is a machine that produces electricity. Generators produce almost all of the electricity used by people. They supply the electric power that runs machines in factories‚ provide lighting‚ and operate
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is to use the electric motor instead of gasoline one. An electric car is a car that powered by an electric motor rather than a regular gasoline engine. There are several major differences between gasoline and electric cars. First of all‚ “the electric motor will replace the gasoline engine” (“How Electric”‚ 2004). Secondly‚ “the electric motor is powered by a controller” (“How Electric”‚ 2004). Thirdly‚ “the controller gets power from the rechargeable batteries” (“How Electric”‚ 2004). In
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------------------------------------------------- Electric generator From Wikipedia‚ the free encyclopedia U.S. NRC image of a modern steam turbine generator Early Ganz Generator in Zwevegem‚West Flanders‚ Belgium Early 20th century alternator made inBudapest‚ Hungary‚ in the power generating hall of a hydroelectric station In electricity generation‚ an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric charge (usually carried by electrons)
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help the environment and also save lots of money. Electric cars are something everyone should invest in because it saves a lot of money. Many people probably think that it will cost a lot of money because of the installation but in the long run you would actually save more than gasoline does. People can also make it convenient to have a charger installed in their homes so that they don’t have to pay or travel far just to recharge. Using electric cars will keep our environment from being polluted
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5. What was the significance of Lincoln receiving nonrecourse notes rather than recourse notes as payment or partial payment on many of the properties sold? The first thing to look at is what the difference between nonrecourse and recourse notes is. A nonrecourse note is a note that prohibits the lender from attempting further restitution from the borrower in case of default. This means that the lender may not receive further compensation for a default loan. The lender can only take back the
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The Real Lincoln The biography The Real Lincoln by Thomas DiLorenzo gives readers a whole new perspective about Lincoln that they never had before. His meticulous research‚ passionate imagery‚ and skillful writing techniques‚ all are able to bring knowledge to the reader’s minds about our sixteenth president that we were never aware of before. Lincoln was always affiliated with the topics of equality‚ ending slavery‚ social fairness‚ and much alike‚ but the quotes stated by politician/president
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point charge q2 = 5.1 μC is located along the x-axis at a distance x2 = 9.3 cm from q1. 1) What is F12‚x‚ the value of the x-component of the force that q1 exerts on q2? -18.57 N For all of these problems we want to make use of the standard electric force equation: ̂ So for this problem with K=9*109 Nm2/C2‚ Q1=-3.5μC‚ Q2=5.1 μC‚ and r=9.3 cm we get F=-18.57 N. It’s important to realize that getting a negative force value means the charges attract. The direction of that attraction is determined
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Chapter 1 The History of Electric Transformer INTRODUCTION: Transformer is a device that transfers electric energy from one circuit to another‚ usually with a change in voltage. Transformers work only with a varying electric current‚ such as alternating current (AC). Transformers are important in the distribution of electric power. They raise the voltage of the electricity generated at a power plant to the high levels needed to transmit the electricity efficiently. Other transformers
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