1 ELECTRIC MOTORS I. Introduction Electric motors are considered to be important mechanical devices. They usually convert the electrical energy coming from the mechanical device into its kinetic energy to make it work (Petingco and Resurreccion‚ 2011). In this exercise‚ the students were tasked to use an example of an electric motor‚ identify its parts‚ and make it work. All electrical motors are equipped with stator and rotor. Stator is known as the stationary part of an electric motor
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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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Reactions to the Lincoln Assassination Washington‚ DC‚ April 14‚ 1865‚ 10:45 p.m.‚ the President of the United States was shot with a Philadelphia Deringer pistol at Ford’s Theatre while attending the play Our American Cousin. He was carried across the street where he died early the next morning. The assassin‚ John Wilkes Booth‚ made his escape by horse and rode to the house of Doctor Mudd‚ a resident of Maryland who repaired his leg. The next day Booth was found hiding in a barn and was killed
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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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Term Paper Abraham Lincoln The United States of America has not always been as structured and cultured as we see today. America had to be built from the ground up‚ and a large building block of that progression was government. Government has evolved from all of the country’s political positions‚ but most importantly its Presidents. The President is the chief executive of the United States who serves as both chief of state and chief political executive (Merriam-Webster). Our country has had a
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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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Abraham Lincoln ’s Emancipation Proclamation Susan Harrison History 221 Professor Taylor February 10‚ 2013 Until Abraham Lincoln issued the preliminary Emancipation Proclamation on 22 September 1862‚ the President’s enunciation of Civil War aims centered squarely upon the restoration of the Union‚ and purposefully omitted the inclusion of the abolition of slavery. Dismantling the institution of slavery was not his ultimate objective‚ and
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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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