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On Mar 14, 5:51*pm, Cecil Moore wrote:
Keith Dysart wrote: On Mar 14, 7:59 am, Cecil Moore wrote: P(t).reactance = [V(t).reactance][I(t).reactance] Where is that term in your equations? It is unnecessary. But if you believe me wrong, show me where it goes, compute the values, and show how it accounts for the energy that is not dissipated in the source resistor. It is unnecessary to account for all of the instantaneous power???? Your problem is greater than just a simple misunderstanding of the laws of physics by which we must all abide. The DC energy is stored in your vehicle's battery until it is needed to start your vehicle. That delay between stored energy and needed energy is related to the (undefined) wavelength. Think about it. In an AC circuit, the reactance has no say as to when to store the energy and when it is delivered back to the system. It is also related to wavelength which is defined. When the source voltage is zero at its zero crossing point/time, the instantaneous power dissipation in the source resistor is NOT zero! Doesn't that give you pause to wonder where the instantaneous power is coming from when the instantaneous power delivered by the source is zero???? Previously explained, as you may have forgotten, with the energy cyclically returned from the line. For your convenience, I copy from a previous post: ---- Recall that Pg(t) = 32 + 68cos(2wt) For some of the cycle, energy flow is from the line towards the resistor and the voltage source. But this is not the energy in the reflected wave which has the function Pr.g(t) = -18 + cos(2wt) and only flows in one direction, towards the source. And it is this supposed energy that can not be accounted for in the dissipation of the source resistor. ---- And, as expected Ps(t) = Prs(t) + Pg(t) Energy is conserved. ...Keith |
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