Dc Machine

Dc Machine 2a. i) Startup of a linear DC motorcar: Startup of a linear DC machine: (See Fig 1.1) 1. The switch is closed which allows current to flow. The current flows design the bar, which is given Kirhhoffs potential difference law. Note: The bar was at rest so eind = 0 I = VB-eind = VB/R R R 2. While this current flows thu the there is a magnetic ferocity, which induce a force on the wires. Find = i/B 3. The bar will accelerate. When the the velocity of the bar increase, the potential drop appears across the bar find = vBl 4. Thus the increase voltage reduces the current flowing through the bar.

I = VB-eind R 5. The declaration of this action is that eventually the bar will reach a constant steady state speed where the net force on the bar is zero. This happen when eind has risen all the route up to equal the voltage of VB & I=0. At that time...If you want to get a full essay, order it on our website: Orderessay

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