Dc Machine

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Janice B


Date added:

March 17, 2012








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2 / 482


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The bar will accelerate. When the the velocity of the bar increase, the voltage appears across the bar find = vBl 4. Thus the increase voltage reduces the current flowing through the bar. I = VB-eind R 5. The result of this action is that eventually the bar will reach a constant steady state speed where the net force on the bar is zero...
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This happen when eind has risen all the way up to equal the voltage of VB & I=0. At that time the bar will be moving at a speed given by Vss= VB Bl 6. The bar will continue to move forever unless some external force disturbs it. Linear DC Motor or Generator ii) Motor Operation (See Fig 1.2) Since the bar was initially at steady state, application of the force Fload motion will result in a force on the bar in the direction opposite the direction of motion...
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